How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

CAPE CANAVERAL, Fla. — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby ...

In 2003, NASA-funded researchers spotted what was then the most distant object discovered in our Solar System. The dwarf planet, named Sedna after the Inuit goddess of the sea, was found over 12.9 ...

Because Pluto is so dim, you need a telescope to see it. “A backyard telescope could do it under the right conditions,” says ...

Weighing in at 0.6 solar mass, HOPS-315 should someday grow to become a star much like our own sun; this makes it a promising stand-in for studying the first stages of our solar system’s history. For ...

Researchers have gained direct insights into the area where rocky planets, such as Earth, originate around young protostars.

The double star system is called HD 135344 AB and it's about 440 light-years away from Earth. A and B are both young stars, ...

Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.