As the star throws off layers of material from its outer edges, this gas and dust form a bubble shape that spreads out from the center. At the center of the nebula is the culprit of this mystery: the ...

is about "45 times more massive than our sun," and the bubble feature -- called the Bubble Nebula -- is formed by gas escaping from the star's outer layers, pushed outward by the stellar wind at 4 ...

Glowing like a multi-faceted jewel, the planetary nebula IC 418 lies about 2000 light-years from Earth in the constellation ...

Helix Nebula: This a planetary nebula, which is formed when a star like the Sun runs out of fuel, expands and its outer layers puff off, and then the core of the star shrinks. Orion Nebula ...

To celebrate Hubble's 26th birthday photographing the universe, NASA released awesome images the telescope captured of the "Bubble Nebula" — which looks like a giant soap bubble in space.

The Rose Galaxies, known as Arp 273, showcase two galaxies gracefully entwined by gravity, with the larger galaxy’s spiral arms encircling the smaller one, forming a stunning rose-like structure. The ...

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 ...