Stars form in regions of space known as stellar nurseries, where high concentrations of gas and dust coalesce to form a baby ...

New data reveals a 3-million-light-year filament connecting two galaxies, each of which hosts a supermassive black hole.

Martian clouds are almost always made of dry ice, or frozen carbon dioxide. 95% of the planet's atmosphere is CO2.

A stronomers using the Very Large Telescope at the European Southern Observatory in Chile have imaged a filament of the ...

While Mars' atmosphere is 95% carbon dioxide, few of its clouds are at a high enough atmosphere and low enough temperature to contain frozen carbon dioxide. Most clouds on the planet are made of ...