The Crab Nebula is the remnant of a supernova which was observed almost 1000 years ago. Although it corresponds to one of the ...

The presence of all that molecular gas in the nebula surprised scientists. The intense UV from the white dwarf should break up the carbon monoxide and the molecular hydrogen. But it hasn't.

In this image from NASA's Spitzer Space Telescope, "cometary knots" on the Helix Nebula show blue-green heads caused by excitation of their molecular material from shocks or ultraviolet radiation.

This stunning image features a deep field view of the Cassiopeia constellation where the two small planetary nebulas can be ...

The emission nebula, known as Sh2-284, is an immense region of gas and dust that fuels new star formation. It lacks elements ...

A decades-old cosmic mystery may finally be solved. Scientists now suspect that the strange X-ray glow from a distant white ...

This composite image of the Crab Nebula was assembled with arbitrary ... infrared including the glow of dust particles absorbing ultraviolet and visible light in yellow (from the Spitzer Space ...

This color-composite image of the Helix Nebula was created from images obtained ... oxygen atoms shining under effects of the intense ultraviolet radiation of the 120,000 degree Celsius central ...

NASA’s James Webb Space Telescope captured the stunning image of Cartwheel Galaxy. This landscape of “mountains” and “valleys” speckled with glittering stars is actually the edge of a nearby, young, ...