Stars form in massive clouds of gas called molecular clouds. As they form, they accrete gas from these clouds, and as the ...

What if all the planets suddenly doubled in size? Imagine the gravitational, atmospheric, and orbital upheaval across the ...

Astronomers have identified a colossal exomoon candidate roughly seven Neptune masses orbiting the giant world HD 206893 B — ...

Look up on a dark night and the stars seem scattered at random. Step back in scale, though, and the Universe looks nothing ...

In young planetary systems, mutual collisions between asteroids or comets generate large amounts of dust, forming a "debris ...

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

Observations with the instrument SPHERE at ESO's Very Large Telescope have produced an unprecedented gallery of "debris disks" in exoplanetary systems.

Space questions everything about what we know about existence and consists of gigantic stars, icy comets and distant worlds ...

In the early 1980s, two Soviet-era missions, Venera 13 and 14, measured sound waves on Venus, producing a measurement of wind ...

But the Big Bang theory predicts that about 5% of the universe’s contents should be atoms made of protons, neutrons and electrons. Most of those atoms cannot be found in stars and galaxies – a ...

While last week's stunning auroras delighted many people across Australia, a massive solar storm that hit last year squeezed ...

The filament of matter stretches 50 million light-years, and contains a row of galaxies 5.5 million light-years long that are ...