For centuries, the night sky has seemed frozen and unchanging, yet time-lapse observations reveal that the universe is in constant motion. From the expanding gas clouds of the Crab Nebula to the ...

Astronomers suspect that a massive metallic cloud swirling in a nearby star system could be hiding a giant planet or dwarf star from view, after it drastically dimmed a sun-like star for around nine ...

A new image from NASA's Hubble Space Telescope shows the Lupus 3 cloud in Scorpius bursting with young stars that are forming ...