A new Hubble Space Telescope image offers the most detailed view of the Crab Nebula, which is located 6,500 light-years from ...

objects or events you can see in the sky.

Emission nebulae are glowing, spread-out clouds of ionized gas that shine with their own light. In this image of NGC 2313, the bright star V565 at the center lights up a silvery curtain of gas and ...

The Helix Nebula is an example of a planetary nebula. Though it looks like a bubble or eye from Earth's point of view, the Helix is actually a trillion-mile-long tunnel of glowing gases. In its center ...