Astronomers are studying the gassy knot to learn more about how dust ... billowing clouds of turbulent dust and gas to gently ...

They saw an ancient disk of gas and dust surrounding the star that should've disappeared long ago. For a long time, it was believed that these planet-forming disks lived short lives in the grand ...

Cometary knots of gas collide in this stunning nebula ... formed by a star rapidly evolving into a white dwarf, expelling gas and dust into space. A supernova remnant, this nebula is the result ...