• September 27, 2007

    Episode 121: Through the Veil

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    When a star explodes, it leaves behind a glowing cloud of heated gas called a supernova remnant. Hubble recently took pictures of one of these remnants -- the Veil Nebula, 1,400 light years away. The nebula's star would have exploded thousands of years ago, leaving behind an expanding bubble of gas. Scientists are fascinated by supernovae because the explosions create and scatter certain vital elements around the universe.