A Dutch astrophotographer has unveiled a stunning portrait of the Eastern Veil Nebula, revealing the remnants of a colossal ...

Some of the most dramatic events in the universe are the deaths of massive stars. When stars far larger than our sun run out of fuel and explode in huge supernovas, these events not only let out huge ...

Fly about 2,600 light-years to Hubble Space Telescope imagery of the Cygnus loop nebula. See images from 2001 and 2020.

The loop-like structure is taller than 10 Earths stacked on top of each other. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Miguel Claro is a ...

Nuclear thermal propulsion, which uses heat from nuclear reactions as fuel, could be used one day in human spaceflight, possibly even for missions to Mars. Its development, however, poses a challenge.