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NASA's Chandra X-ray Observatory Podcasts :: Recent Discoveries from NASA's Chandra X-ray Observatory in an Audio/Video Format
Video Episodes currently available for this Show
4C+29.30 in 60 Seconds 05/15/13
Astronomers think that just about every galaxy contains a giant, or supermassive, black hole at their center.
Heaven and Earth 05/14/13
There are patterns of beauty across our Earth and throughout the Universe.
STOP for Science: That's Fast 05/01/13
Most of us have heard the story of the tortoise and the hare. The tortoise is slow and the hare is fast. But what exactly does this mean?
NGC 6240 in 60 Seconds 04/30/13
Two large galaxies are colliding and scientists have used Chandra to make a detailed study of an enormous cloud of hot gas that surrounds them.
SN1006 in 60 Seconds 04/22/13
The new Chandra data provide new details about SN 1006.
Shadows: Light That Does Not Pass 04/17/13
Shadows occur on other planets as well. One excellent place to look for shadows in our Solar System is the planet Jupiter.
The Shape of Speed 04/11/13
Bow waves are not just found in duck ponds. Rather they can be anywhere in water, air, or even space where an object is moving quickly enough.
NGC 602 in 60 Seconds 04/03/13
The Small Magellanic Cloud - also known as the SMC - is one of the closest galaxies to the Milky Way.
STOP for Science: When Stars Go Boom 03/27/13
Our Sun is a star. In fact, it is the closest star we'll ever see. The Sun is about 5 billion years old and will live for about 5 billion more. But not all stars live this long.
Kepler’s Supernova Remnant in 60 Seconds 03/20/13
Over 400 years ago, Johannes Kepler and many others witnessed the appearance of a new "star" in the sky.
47 Tucanae in 60 Seconds 03/07/13
Neutron stars are the ultra-dense cores that are often left behind after massive stars run out of fuel and collapse.
Learn About Stars 02/21/13
Stars appear to be permanent fixtures of the night sky. However, stars are like people. They are born, live a lifetime, and ultimately die.
W49B in 60 Seconds 02/14/13
The supernova remnant known as W49B is, let's say, a bit unorthodox looking. Many supernova remnants appear rather spherical in shape.
Learn About Solar System 02/07/13
One star, eight planets, and a myriad of moons, comets and asteroids. This is the Earth's local neighborhood, known as the Solar System.
Ice Core Records: From Volcanoes to Supernovas (Part II) 02/04/13
While astronomers know that Cassiopeia A, or Cas A for short, is the aftermath of a massive star that exploded, it is unclear exactly when the explosion took place.
DEM L50 in 60 Seconds 02/01/13
DEM L50 is what astronomers call a superbubble. These objects are found in regions where massive stars have formed, raced through their evolution, and exploded as supernovas.
Chandra Images in 2012 01/08/13
The Chandra images included in this short 2012 retrospective are drawn from dozens of images posted on our website (from among hundreds taken) in the past year to show the breadth and depth of research done using Chandra.
Vela Pulsar in 60 Seconds 01/07/13
Unlike with some Hollywood films, a sequel of a movie from NASA's Chandra X-ray Observatory is better than the first.
Learn About Supernovas 01/03/13
Supernovas are some of the most dramatic events in the cosmos. These titanic events send shockwaves rumbling through space and create giant bubbles of gas that have been superheated to millions of degrees.
Learn About Black Holes 12/27/12
If a star has three times or more the mass of the sun and collapses, it can form a black hole.
A Bend in the Road 12/20/12
There are many things around us that bend. Straws bend. Rivers bend. But did you know that light also bends?
PKS 0745 in 60 Seconds 12/18/12
Some of the biggest black holes in the Universe may actually be even bigger than previously thought.
NGC 3627 in 60 Seconds 12/13/12
The spiral galaxy NGC 3627 is located about 30 million light years from Earth. Astronomers recently completed a survey of galaxies to look for supermassive black holes.
NGC 922 in 60 Seconds 12/06/12
By comparing NGC 922 to galaxies with different mixtures of elements, astronomers hope to master the ideal recipe for what it takes to make these large black holes.
When Atoms Collide 12/03/12
Where can we observe light emitted by atoms? The answer: Here, there, and everywhere.
GB 1428+4217 in 60 Seconds 11/29/12
The most distant jet in X-ray light has been discovered using data from NASA's Chandra X-ray Observatory.
Abell 30 in 60 Seconds 11/19/12
A planetary nebula is formed in the late stage of the evolution of a sun-like star, after it expands to become a red giant.
Cygnus OB2 in 60 Seconds 11/15/12
The Milky Way and other galaxies in the universe are home to many star clusters and associations that each contain hundreds to thousands of hot, massive, young stars.
Spirals in Nature 11/07/12
Looking at a hurricane from this point of view, we can see that the storm is, in fact, a giant spiral shape.
Learn About the Milky Way 11/01/12
The word galaxy comes from the Greek word meaning "milky circle" or the more familiar Milky Way.
NGC 4178 in 60 Seconds 10/25/12
A supermassive black hole with one of the lowest masses ever observed has been spotted in the middle of a galaxy, using NASA's Chandra X-ray Observatory and several other observatories.
Planetary Nebula Survey 10/10/12
A planetary nebula is a phase of stellar evolution that the sun should experience several billion years from now, when it expands to become a red giant.
WIND - Here, There and Everywhere 09/26/12
Wind is an excellent example of a phenomenon that happens here, there, and everywhere.
Kepler's Supernova Remnant in 60 Seconds 09/12/12
This image of Kepler's supernova remnant shows the expanding ball of debris from a supernova explosion in our galaxy.
NGC 1929 in 60 Seconds 08/30/12
The star cluster known as NGC 1929 is embedded in a cloud of gas and dust, which astronomers call the N44 nebula.
Short Trailer for Here, There and Everywhere 08/27/12
This short video introduces the Here, There and Everywhere project with snippets of the universal topics being explored.
Phoenix Cluster in 60 Seconds 08/15/12
Astronomers have found an extraordinary galaxy cluster -- one of the largest objects in the Universe -- that is breaking several important cosmic records.
SN 1957D in M83 in 60 Seconds 07/30/12
Over fifty years ago, a supernova was discovered in M83, a spiral galaxy about 15 million light years from Earth.
IGR J11014-6103 in 60 Seconds 06/28/12
A pulsar found racing away from a supernova remnant about 30,000 light years from Earth.
NGC 4342 and NGC 4291 in 60 Seconds 06/13/12
Astronomers think that just about every galaxy has a giant black hole at its center.
CID-42 in 60 Seconds 06/04/12
At the center of a galaxy some 4 billion light years from Earth, something extraordinary is happening. This galaxy, known as CID-42, contains a giant black hole.
SN 2010jl in 60 Seconds 05/17/12
Why are some supernovas much more powerful than others? Astronomers are still trying to figure that out, but one new discovery may help answer the question.
M83 in 60 Seconds 05/02/12
Since the 1980s, astronomers have known about a mysterious class of objects that they call "ultraluminous X-ray sources," or ULXs.
Musket Ball Cluster in 60 Seconds 04/16/12
Using a combination of powerful observatories in space and on the ground, astronomers have discovered a violent collision between two galaxy clusters.
Stop for Science: Listening to Light 04/11/12
When we look up on a dark night, we see a sky filled with stars. The light from a star, like the light from a flashlight or a lightning bug, is one form of electromagnetic radiation.
Cassiopeia A in 60 Seconds 04/03/12
Over three hundred years ago, a very large star ran out of fuel and collapsed. This event created an explosion, known as a supernova, which then produced an expanding field of debris.
A Tour of 3C 186: An Interview with Dr. Aneta Siemiginowska 03/23/12
A galaxy cluster containing a structure never previously seen so far from Earth has been observed by Chandra X-ray Observatory.
Abell 383 in 60 Seconds 03/14/12
Dark matter is mysterious. We know that it is invisible material that does not emit or absorb any type of light, but we can detect it through the gravitational effects it has on material we can see.
Sgr A* in 60 Seconds 02/09/12
Over several years, astronomers have noticed flares in X-ray light from the black hole at the center of the Milky Way.
G350.1-0.3 in 60 Seconds 02/01/12
G350.1+0.3 is a young and exceptionally bright supernova remnant located nearly 15,000 light years from Earth toward the center of the Milky Way.
Ice Core Records: From Volcanoes to Supernovas 01/27/12
Researchers have been traveling for decades to some of the coldest places on the planet to uncover some of the secrets from space that have been left behind on Earth.
El Gordo (ACT J0102-4915) in 60 Seconds 01/11/12
Astronomers using the Chandra X-ray Observatory and ground-based optical telescopes have discovered an extraordinary galaxy cluster some 7.2 billion light years from Earth.
SXP 1062 in 60 Seconds 12/21/11
The Milky Way galaxy has several small satellite galaxies very close to it. One of them is called the Small Magellanic Cloud.
Abell 2052 in 60 Seconds 12/14/11
The galaxy cluster Abell 2052 is found some 480 million light years from Earth. At the center of Abell 2052 is a giant elliptical galaxy, and within that is a supermassive black hole.
Tarantula Nebula in 60 Seconds 12/09/11
30 Doradus is a place where stars are born literally. This region, which is also known as the Tarantula Nebula, is located about 160,000 light years from Earth.
Cygnus X-1 in 60 Seconds 11/18/11
Over three decades ago, Stephen Hawking placed, and eventually lost, a bet against the existence of a black hole in Cygnus X-1.
RCW 86 in 60 Seconds 11/02/11
In 185 A.D., Chinese astronomers noted a "guest star" that mysteriously appeared in the sky and stayed for about 8 months.
CID 1711 and CID 3083 in 60 Seconds 10/26/11
Astronomers have recently completed a large survey of the sky using some of the powerful telescopes both on the ground and in space.
G299.2-2.9 in 60 Seconds 10/13/11
G299.2-2.9 is an intriguing supernova remnant found about 16,000 light years away in the Milky Way galaxy.
NGC 281 in 60 Seconds 09/30/11
High-mass stars are important because they are responsible for much of the energy pumped into a galaxy over its lifetime.
CoRoT-2A in 60 Seconds 09/13/11
In recent years, astronomers have found hundreds of planets orbiting stars other than our Sun.
NGC 3393 in 60 Seconds 08/31/11
Astronomers using NASA's Chandra X-ray Observatory have discovered the first pair of supermassive black holes in a spiral galaxy similar to the Milky Way.
VV 340 in 60 Seconds 08/11/11
VV 340, also known as Arp 302, is a textbook example of colliding galaxies seen in the very early stages of their interaction.
A Tour of the Crab 08/02/11
The Crab Nebula is one of the brightest sources of high-energy radiation in the sky.
NGC 3115 in 60 Seconds 07/27/11
This is NGC 3115, a galaxy located about 32 million light years from Earth. This composite image contains X-rays from Chandra as well as optical data from the Very Large Telescope.
PSR J0357+3205 in 60 Seconds 07/13/11
A spinning neutron star is tied to a mysterious tail, or is it? Astronomers using NASA's Chandra X-ray Observatory have found a long, X-ray bright tail streaming away from the pulsar known as PSR J0357.
Abell 2744 in 60 Seconds 06/23/11
One of the most complicated and dramatic collisions ever seen between galaxy clusters is captured in this new composite image.
CDFS in 60 Seconds 06/17/11
This image is what is known as the Chandra Deep Field South, a 4-million-second exposure made by NASA's Chandra X-ray Observatory.
Carina Nebula in 60 Seconds 05/24/11
Located in the Sagittarius-Carina arm of the Milky Way a mere 7,500 light years from Earth, the Carina Nebula is one of the best places to study how massive stars live and die.
Tycho's Supernova Remnant in 60 Seconds 04/29/11
New research using Chandra data of the Tycho supernova remnant provides astronomers with clues to what triggered the original supernova explosion.
Massive Stars in the Milky Way in 60 Seconds 04/19/11
Like looking for Easter eggs in a lawn of long grass, the hunt for the Milky Way's most massive stars takes persistence and sharp eyes and powerful telescopes that can see different types of light.
Tycho in 60 Seconds 03/24/11
Over four hundred years ago, the Danish astronomer Tycho Brahe studied the explosion of a star that later became known as Tycho's supernova.
Cassiopeia A in 60 Seconds 02/23/11
A new discovery from a famous exploded star has provided the first evidence for a bizarre state of matter in its core.
Arp 147 in 60 Seconds 02/09/11
This image shows Arp 147, a pair of interacting galaxies some 430 million light years from Earth.
GRS 1915+105 in 60 Seconds 01/29/11
GRS 1915+105, or GRS 1915 for short, is a special system. Not only does it contain a black hole some 14 times more massive than the Sun in orbit with a companion star, it also has a heartbeat.
Aesthetics and Astronomy 12/10/10
Every year, hundreds of astronomical images are released to the general public by the many telescopes on the ground and in space.
A Tour of SN 1979C 11/15/10
The youngest known black hole in our cosmic neighborhood may have been found using NASA's Chandra X-ray Observatory and other telescopes.
A Tour of GOODS 10/14/10
The most powerful telescopes on the ground and in space have joined forces over the last decade in a unique observing campaign, known as GOODS, which reaches across the spectrum and deep back into cosmic time.
G327.1-1.1 in 60 Seconds 10/08/10
G327.1-1.1 is the aftermath of a massive star that exploded as a supernova in the Milky Way galaxy.
Rosette Nebula in 60 Seconds 09/17/10
This spectacular image shows the Rosette star formation region, which is located about 5,000 light years from Earth.
Super-volcano M87 in 60 Seconds 09/03/10
This composite image from NASAs Chandra X-ray Observatory with radio data from the Very Large Array shows a cosmic volcano being driven by a black hole in the center of the M87 galaxy.
CH Cyg in 60 Seconds 08/20/10
Deep within this optical image lies an intriguing system known as CH Cyg. CH Cyg is a binary star system containing a white dwarf that feeds from the wind of a red giant star.
A GPS System for Cosmic Images 08/16/10
The Chandra X-ray Observatory captures information about the high-energy Universe. Chandra data is inherently digital. As the methods to communicate digitally have advanced, so too have the efforts to keep Chandra engaged with the public.
Antennae in 60 Seconds 08/06/10
This beautiful new image shows two colliding galaxies as seen by NASA's Great Observatories.
NGC 7793 in 60 Seconds 07/26/10
This composite image shows the nearby galaxy NGC 7793 that contains a powerful microquasar in its outskirts.
M31 Black Hole in 60 Seconds 07/02/10
For over a decade, astronomers have been using the Chandra X-ray Observatory to monitor the supermassive black hole in the center of Andromeda, the Milky Way's sister galaxy.
M82 in 60 Seconds 06/18/10
We begin with a composite image of the nearby starburst galaxy M82 that contains X-rays from Chandra in blue, optical data from Hubble in green and orange, and infrared data from Spitzer in red.
N49 in 60 Seconds 06/04/10
This beautiful image shows N49, which is the aftermath of a supernova explosion in the Large Magellanic Cloud.
Abell 3376 in 60 Seconds 05/10/10
This composite image of the galaxy cluster Abell 3376 shows X-ray data from the Chandra X-ray Observatory and the ROSAT telescope along with an optical image from the Digitized Sky Survey and radio emission observed by the Very Large Array.
G54.1+0.3 in 60 Seconds 04/26/10
Data from the Chandra X-ray Observatory and the Spitzer Space Telescope were combined to create this image of the dusty remains of a collapsed star.
SDSS J1254+0846 in 60 Seconds 04/09/10
Two quasars have been caught in the act of merging, thanks to this new image.
NGC 1068 in 60 Seconds 03/24/10
This image shows one of the nearest and brightest galaxies to the Milky Way that contains a rapidly growing supermassive black hole known as NGC 1068.
ESO 137 in 60 Seconds 03/10/10
Two spectacular tails of X-ray emission have been seen trailing behind a galaxy known as ESO 137.
M31 in 60 Seconds 02/22/10
This image of M31 represents a study of six elliptical galaxies that Chandra made to determine what causes an important type of supernova.
NGC 1399 in 60 Seconds 02/04/10
Evidence from Chandra X-ray Observatory and the Magellan telescopes in Chile suggest that a star has been torn apart by an intermediate-mass black hole.
Sagittarius A* in 60 Seconds 01/21/10
Astronomers have long known that the supermassive black hole at the center of our Milky Way galaxy is a particularly poor eater.
Best of The Beautiful Universe 12/28/09
In its first decade of exploration, Chandra has expanded our view of the universe with its unrivaled ability to create high-resolution X-ray images of cosmic phenomena.
Chandra's Extraordinary Universe 12/21/09
In ten years of operation, the Chandra X-ray Observatory has transformed our view of the high-energy universe with its ability to make exquisite X-ray images of star clusters, supernova remnants, galactic eruptions, and collisions between clusters of galaxies.
Multiwavelength Crab Nebula in 60 Seconds 12/07/09
The Crab Nebula is one of the most studied objects in the night sky. This version of the Crab Nebula combines data from three different telescopes.
Multiwavelength Galactic Center in 60 Seconds 11/23/09
This never-before-seen view of the turbulent heart of our Milky Way combines a near-infrared view from Hubble, an infrared image from Spitzer, and X-ray data from Chandra.
The Cassiopeia A in 60 Seconds 11/09/09
Cassiopeia A is a supernova remnant found embedded in the constellation that bears its name, which is known as the queen in Greek mythology.
JKCS041 in 60 Seconds 10/26/09
The most distant galaxy cluster yet has been found some 10.2 billion light-years from Earth.
NGC 6240 in 60 Seconds 10/07/09
NGC 6240 is a system in which two supermassive black holes are a mere 3,000 light years apart, virtually nothing in astronomical terms.
Galactic Center in 60 Seconds 09/22/09
This image from the Chandra X-ray Observatory reveals a wealth of exotic objects and high-energy features at the center of our Milky Way galaxy.
Hydra A in 60 Seconds 09/14/09
This composite image of the Hydra A galaxy cluster shows 10-million-degree gas observed by Chandra and jets of radio emission observed by the Very Large Array.
Cepheus B in 60 Seconds 08/28/09
A new study from two of NASA's "Great Observatories" provides fresh insight into how some stars are born, along with a beautiful new image of a stellar nursery in our own Milky Way Galaxy.
Introductory Trailer to Chandra 08/10/09
In Florence, Italy, in the year 1609, the world changed. Using a small telescope, Galileo proved that the Earth is not distinct from the universe, but part of it. And he showed that there is much more to the universe than we see with the naked eye.
E0102 in 60 Seconds 07/23/09
The supernova remnant known as E0102 was one of the targets that Chandra first observed after its launch in 1999.
Stephan's Quintet in 60 Seconds 07/10/09
This beautiful image gives a new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth.
GRS 1915 in 60 Seconds 06/25/09
We start with an optical and infrared image that shows the crowded area around the object known as GRS 1915+105, or GRS 1915 for short.
Galactic Ridge in 60 Seconds 05/29/09
This sequence begins with an infrared view from the Spitzer Space Telescope of the central region of the Milky Way.
MacsJ0717 in 60 Seconds 05/15/09
This image contains one of the most complex galaxy clusters known, which is located about 5.4 billion light years from Earth.
Peering Into the X-ray Future 05/05/09
This episode will touch on some of the areas in which astronomers hope X-ray telescopes will push our knowledge forward in the years to come.
Medusa in 60 Seconds 05/01/09
NGC 4194 is a galaxy that is found about 110 million light years from Earth.
30 Doradus in 60 Seconds 04/17/09
Chandra's X-ray image of the Tarantula Nebula gives scientists a close-up view of the drama of star formation and star evolution.
PSR B1509-58 in 60 Seconds 04/03/09
A small dense object is responsible for the remarkably complex and intriguing structures seen in this image from the Chandra X-ray Observatory.
NGC 604 in 60 Seconds 03/23/09
NGC 604 is a divided neighborhood in the galaxy M33, where some 200 hot, young massive stars reside.
Crab Nebula in 60 Seconds 03/05/09
The Crab Nebula is one of the best-known images ever taken by the Chandra X-ray Observatory.
M101 in 60 Seconds 02/10/09
This image of the spiral galaxy Messier 101 is a composite of observations from NASA's three Great Observatories.
Abell 85 in 60 Seconds 01/23/09
The composite image shows the galaxy cluster known as Abell 85, which is located about 740 million light years from Earth.
3-D Fly-Through of Cassiopeia A 01/08/09
For the first time, a multiwavelength three-dimensional (3-D) reconstruction of a supernova remnant has been created.
G292.01+8 in 60 Seconds 12/22/08
This image shows how complex a star's afterlife can be.
M84 in 60 Seconds 12/12/08
M84 is a massive elliptical galaxy located about 55 million light years from Earth in the Virgo Cluster.
M87 in 60 Seconds 11/25/08
M87 is a giant elliptical galaxy. At a distance of about 60 million light-years from Earth, M87 is the largest galaxy in the Virgo cluster of some 2,000 galaxies.
Abell 1689 in 60 Seconds 11/14/08
Abell 1689 is a massive cluster of galaxies located about 2.3 billion light-years away.
SN1996cr in 60 Seconds 10/31/08
In 1995 or 1996 a supernova exploded in a nearby galaxy, but no one on Earth knew it at the time.
RCW 108 in 60 Seconds 10/16/08
RCW 108 is a region where stars are actively forming about 4,000 light-years from Earth.
Perseus A in 60 Seconds 10/02/08
The giant galaxy, Perseus A, which is also known as NGC 1275, is a well-known source of strong radio radiation.
Cat's Eye Nebula in 60 Seconds Plus 09/19/08
This composite of data from NASA's Chandra X-ray Observatory and the Hubble Space Telescope is another look for NGC 6543, better known as the Cat's Eye nebula.
Macs J0025.4-1222 in 60 Seconds Plus 09/04/08
Two galaxy clusters, each a quadrillion times the mass of the Sun, collided to form the system formally known as Macs J0025.4-1222.
M81 in 60 Seconds 08/21/08
This image of the mammoth spiral galaxy M81, located about 12 million light years away, contains data from four different NASA satellites.
SN 1006 in 60 Seconds 08/08/08
The brightest supernova ever recorded on Earth, this spectacular light show was documented in China, Japan, Europe, and the Arab world. It was brighter than Venus, and visible during the day for weeks.
Centaurus A in 60 Seconds 07/24/08
There is nothing subtle about the black hole in the galaxy Centaurus A. First off, it's about 10 million times more massive than the sun, and Chandra's X-ray image shows it's not just sitting quietly as a bright point in the middle.
NGC 4258 in 60 Seconds 07/11/08
A composite image of NGC 4258, about 25 million light-years from Earth, shows an X-shaped pattern when seen in different types of light.
G1.9+0.3 in 60 Seconds 06/30/08
About a hundred and forty years ago, the light from a supernova explosion in our galaxy reached the Earth, but no one saw it. The discovery of this supernova remnant helps astronomers better understand how often these stellar time-bombs go off in our galaxy.
3C321 in 60 Seconds 06/12/08
In 3C321, a jet from a black hole in one of the galaxies is pummeling its neighbor galaxy, the first time this type of galactic violence has ever been seen. The jet could bring big trouble for any planets in its path, but could also trigger a burst of star formation in its wake.
Just Two Numbers Is All You Need 06/02/08
Black holes sound wildly complicated. After all, there are all sorts of bizarre things going on: intense gravity, the warping of the fabric of space, the distortion of time itself. But when it comes to describing black holes, it comes down to just two numbers: the mass of the black hole and its spin.
Sombrero Galaxy in 60 Seconds 05/21/08
Like the Milky Way, Sombrero is a spiral galaxy. However, we see Sombrero edge-on from our vantage point from Earth, rather than the face-down perspective that is more familiar.
Kepler's Supernova Remnant in 60 Seconds 05/07/08
The supernova explosion that created this object was witnessed on Earth about 400 ago years by many skywatchers, including the astronomer Johannes Kepler. This object, which now bears Kepler's name, is the remains of a massive star's demise.
M82 in 60 Seconds 04/14/08
When seen in visible light from the Hubble Space Telescope, M82 looks like an ordinary spiral galaxy.
Exploring The Large Magellanic Cloud 04/02/08
The Large Magellanic Cloud, known as the LMC, is a nearby satellite galaxy of our own Milky Way. At a distance of around 160,000 light-years, the LMC is the third closest galaxy to us. But the LMC is more than just a nice little sidekick.
The Crab Nebula in 60 Seconds 03/31/08
In 1054 A.D., a star's death in the constellation Taurus was observed on Earth. Now, almost a thousand years later, a superdense neutron star left behind by the explosion is spewing out a blizzard of extremely high-energy particles into the expanding debris field known as the Crab Nebula.
M51 in 60 Seconds 03/18/08
Hubble's image of M51, also known as the Whirlpool Galaxy, shows the majestic spiral arms that are actually long lanes of stars and gas laced with dust. The infrared image from Spitzer also reveals stars and the glow from clouds of interstellar dust.
The Universe Darkly 02/29/08
When you look up at the night sky, you see a lot of things glowing like stars, planets, and galaxies. So it might sound strange to hear that most of the Universe is actually dark. The truth is the protons, neutrons and electrons that make up everything we can see, and that means everything with telescopes we've got, accounts for only about 4% of the mass and energy of the Universe. The rest is dark and mysterious. More specifically, about 70% of the Universe is what is known as dark energy; about 26% is so-called dark matter. Modern day astronomers have developed many tactics to explore the dark Universe, including using telescopes like Chandra.
Cassiopeia A in 60 Seconds 02/11/08
Cassiopeia A is the 300-year-old remnant created by the supernova explosion of a massive star. Each Great Observatory image highlights different characteristics of the remnant.
Chandra in the (Google) Sky 01/29/08
Astronomy is truly in a golden age. With a fleet of space-based observatories, including the Chandra X-ray Observatory, astronomers now have a suite of amazing tools to study the Universe. Simultaneously to this bonanza in astronomy has been the growth and expansion of the Internet. Think back to before 1990. The Internet was barely a rumor and there were no Great Observatories! But now people are taking advantage of these two seemingly separate advances to do some amazing things
What's in a Name? 01/02/08
Names in astronomy don't always tell the whole story. Let's take, for example, radio galaxies. Why, might you ask, would a Chandra podcast talk about such an object? The answer is that radio galaxies are, yes, very bright in radio emission. But they are also powerful emitters of X-rays, optical light and from other parts of the electromagnetic spectrum. More than that, they are important objects that really have played a very big role in how the Universe has evolved.
The Truth and Lies about Black Holes 11/30/07
Black holes have a bad reputation. After all, something that could swallow you completely sounds pretty scary. They're invisible, so maybe there's one just around the corner and we dont know it! Also, arent they enormous vacuum cleaners capable of destroying anything that gets near them? Once the black hole starts pulling on something, isnt that just a one-way ticket to oblivion? Well, not all of these things are exactly true.
When Will History Repeat Itself? 10/31/07
Astronomers think that a supernova should go off in our own Milky Way galaxy every 50 years or so. When was the last one we've seen? Probably 1604. Yes, that's over 400 years ago. This being astronomy however, things will undoubtedly average out over the long run, but in the meantime, we're left without a recent supernova in our Galaxy to study. Luckily for us, astronomers from previous centuries were on the case.
In A Galaxy Far, Far Away and Also Those Nearby 09/28/07
"In a galaxy far, far away..." These are some of the most famous words in movie history. But what do we already know about galaxies, and what do astronomers, like those using the Chandra X- ray Observatory, still hope to learn about them?
From First Light to Eighth Anniversary 08/24/07
Chandra's launch aboard the Space Shuttle Columbia on July 23, 1999, was obviously a very important event. However, you might say it wasn't until about a month later that the Chandra mission really got started. In late August, after weeks of getting the spacecraft into the correct orbit and testing out various aspects of the satellite, Chandra was ready for its debut to the public. This was Chandra's First Light. Chandra's director, Dr. Harvey Tananbaum, explains the significance of that early image.
How It All Started 07/26/07
Just after midnight on July 23, 1999, the Space Shuttle Columbia launched in orbit with the heaviest payload ever carried by a shuttle. Its precious cargo was the Chandra X-ray Observatory, which has helped revolutionize our understanding of the Universe.
Mergers And Acquisitions In The Cosmos 06/28/07
News about mergers is usually found in the business section. But many objects in the Universe, from black holes to clusters of galaxies, are also prone to mergers. Like the corporate world, cosmic mergers are dictated by where the most assets lie.
The Bigger They Are, The Harder They Fall 05/24/07
When you look at the night sky, stars look like permanent fixtures of light. However, stars are born, live for a period of time, and then ultimately die. How they die is directly linked to how massive they were when they were born.
The Exotic World of Neutron Stars 04/30/07
Neutron stars are created when a massive star runs out of fuel and collapses. As the star collapses, the density becomes so immense that protons and electrons are squeezed tightly together to form neutrons. The end result is a star only 20 km across but weighing 1 1/2 times more than our sun and made up mostly of neutrons.
The Giant Planets: X-ray Secrets Revealed 03/19/07
Jupiter and Saturn are the two largest planets in our Solar System, best known for very different reasons. Most people think of Jupiter's famous Great Red Spot, while Saturn is, of course, most loved for those excellent rings. These two planets, however, offer much, much more for astronomers looking to learn more about our Solar System.
Star (X-ray) Light, Star (X-ray) Bright 02/28/07
Remember the line from the children's saying that goes: "Starlight, star bright, first star I see tonight"? Looking at the light from stars is exactly how astronomers can learn about them.
Snowball Fight in the Solar System 01/22/07
One of the most surprising objects observed in X-rays are comets. X-rays are normally associated with the hottest things in the Universe, such as black holes. Comets, however, were described by Fred Whipple as being "dirty snowballs". So how does a snowball make X-rays?
Black Holes: Tall, Grande, Venti 12/31/06
Long before astronomers found evidence that black holes existed, these exotic objects have captured imaginations. In the 21st century, scientists not only have proof that black holes are real, they continue to make startling discoveries both about individual black holes examples and about their populations across the Universe.
Giants of the Universe Probe Cosmic Questions 11/30/06
Clusters of galaxies are the largest structures in the Universe that are held together by gravity. Because of their immense size and mass, galaxy clusters are extremely useful as tools to probe a variety of questions about the Universe as a whole as well as properties of the clusters themselves.
Supernovas: When Stars Die 10/30/06
When a star explodes, it leaves behind a debris field of stellar material and high-energy particles known as a supernova remnant. Astronomers use Chandra to study these remnants that can produce intense X-ray radiation for thousands of years. Supernova remnants are responsible for seeding cloud that formed our Sun, planets, and ultimately us with elements like nitrogen and oxygen.
Until Their Dying Day: Stars on the Brink 09/26/06
Supernovas are the remnants of catastrophic explosions, and they are among the favorite targets of scientists who use Chandra, for good reason too. Supernovas and their remnants have proven to be extremely important in understanding topics ranging from the birth of our Solar System to the history and composition of the Universe itself.
Peering into the Heart of the Milky Way 08/31/06
Humanity has long sought to learn about the Milky Way, our home galaxy. Even after the advent of optical telescopes, the Milky Way's center remained mysterious because gas and dust blocks most visible light along our line of sight. Fortunately, X-ray telescopes like Chandra can detect higher-energy radiation that penetrates this veil of galactic debris.
Putting Chandra In Its Place 07/27/06
How the Chandra X-ray Observatory fits into the modern astronomer's toolkit. Chandra is one of NASA's "Great Observatories". The Great Observatories were four missions selected by NASA to explore different types of radiation and really tackle the biggest questions in astronomy.
Chandra, Not Your Backyard Telescope 06/09/06
X-ray telescopes like Chandra are not like the telescopes you find in backyards or at the local observatory. In addition to being above the Earth's atmosphere, they need to have special mirrors to detect the X-rays that pass through most objects.
How Chandra Does What It Does 05/11/06
NASA's Chandra X-ray Observatory, in orbit since 1999, studies the high-energy Universe, where black holes, exploding stars, and mysterious matter hold sway.