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STOP for Science: When Stars Go Boom

03/29/13
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 ...

Kepler's Supernova Remnant in 60 Seconds

03/29/13
Over 400 years ago, Johannes Kepler and many others witnessed the appearance of a new 'star' in the sky.

47 Tucanae in 60 Seconds

03/15/13
Neutron stars are the ultra-dense cores that are often left behind after massive stars run out of fuel and collapse.

Learn About Stars

03/15/13
Stars appear to be permanent fixtures of the night sky. However, stars are like people. They are born, live a lifetime, and ultimately die.

Learn About Solar System

03/15/13
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)

03/15/13
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 Shape of Speed

03/06/13
Have you ever watched a duck move quickly across a pond You may have noticed that if the duck is paddling fast enough, the ripples of water ...

W49B in 60 Seconds

02/21/13
The supernova remnant known as W49B is, let's say, a bit unorthodox looking. Many supernova remnants appear rather spherical in shape.

DEM L50 in 60 Seconds

02/11/13
DEM L50 is what astronomers call a superbubble. These objects are found in regions where massive stars have formed, raced through their ...

Chandra Images in 2012

01/17/13
The Chandra images included in this short 2012 retrospective are drawn from dozens of images posted on our website from among hundreds ...

Vela Pulsar in 60 Seconds

01/17/13
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

01/17/13
Supernovas are some of the most dramatic events in the cosmos. These titanic events send shockwaves rumbling through space and create giant ...