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Recent Podcast
A Tour of The Big, Bad & Beautiful Universe with Chandra
A Tour of The Big, Bad & Beautiful Universe with Chandra
To celebrate the 15th anniversary of NASA's Chandra X-ray Observatory, we have released four new images of supernova remnants. These show Chandra's ability to study the remains of supernova explosions, using images that are the sharpest available in X-ray astronomy. The images of the Tycho and G292.0+1.8 supernova remnants show how Chandra can trace the expanding debris of an exploded star. The images show shock waves, similar to sonic booms from a supersonic plane, that travel through space at speeds of millions of miles per hour. The images of the Crab Nebula and 3C58 show the effects of very dense, rapidly spinning neutron stars created when a massive star explodes. These neutron stars can create clouds of high-energy particles that glow brightly in X-rays. The image for G292 shows oxygen (yellow and orange), and other elements such as magnesium (green) and silicon and sulfur (blue) that were forged in the star before it exploded. For the other images, the lower energy X-rays are shown in red and green and the highest energy X-rays are shown in blue. (2014-07-22)


IGR J11014-6103: The Space Olympics

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Narrator (April Hobart, CXC): Nothing in space stays still. In fact, most stars are like long-distance marathon runners, as they are constantly moving in space throughout their lifetimes. However, astronomers have recently spotted a star (shown in this new space photo as a green smudge in the box) that is better at sprint running.

To work out the speed of this star, astronomers had to figure out how far it has travelled since it started its race and how long this took. Astronomers think the star began its race at the center of the purple cloud of gas and dust in the photo. That's because this is a special type of star that rotates very quickly, which is called a pulsar. And the pulsar was ejected during the explosion that created the cloud of gas and dust.

Based on their estimates, the astronomers think the pulsar is moving at an incredible speed of between 5 million and 7 million miles per hour! This could make it the fastest moving pulsar ever known! But there is a competitor for the title, as another pulsar has previously been estimated to be moving between 3 and 6 million miles per hour.

It's a pity astronomers can't enter these two stars into a 'Space Olympics' to determine which one is the fastest sprinter. Instead, they need to work it out the hard way and fine-tune their results.

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