On what would've been the astronomer's 90th trip around the sun, here's a look at his legacy as a scientist, advocate and ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the ...

No Brakes It turns out that there are consequences to launching an unchecked amount of satellites into the Earth's orbit.

Black holes are fascinating objects. They're unimaginably dense: If Earth was (hypothetically) crushed into a black hole, it ...

Carl Sagan explained the thought process of the ancient Greek scientist Eratosthenes, who determined the circumference of the Earth.

Astronomers have spotted a black hole that's gobbling up matter at a seemingly impossible rate, surpassing previous limits.

This black hole’s ‘feast’ could help astronomers explain how supermassive black holes grew so quickly in the early Universe.

Growing up in Long Beach, California, his parents adhered to a creationist view of the universe. But young Koerner caught ...

Planetary astronomer Bonnie Buratti remembers exactly ... She is now a deputy project scientist for NASA’s Europa Clipper mission, which launched October 14 to find out if Europa is in fact ...

On Nov. 9, 2024, the world will mark Carl Sagan's 90th birthday—but sadly without Sagan, who died in 1996 at the age of 62.

Remember that amazing 'first image' of Sagittarius A* (Sgr A) black hole at the heart of the Milky Way? Well, it may not be ...

Supermassive black holes exist at the center of most galaxies, and modern telescopes continue to observe them at surprisingly ...