New observations show that planets forming in protoplanetary disks like that around PDS 70 can trigger the formation of ...

Comets without tails, called dark comets, are a newly discovered space object. Now, astronomers know they come in 2 classes.

Astronomers found hidden cosmic channels connecting our solar system to distant stars, reshaping views of interstellar space.

A team of Flat Earth conspiracy theorists recently traveled to Antarctica in the hopes of proving—once and for all—that our ...

Astronomers posed over the past decade that dark comets, or objects that resemble asteroids but move like comets, may exist.

Exomoons are a hot topic in the science community, as none have been confirmed with astronomers finding new and creative ways ...

The solar system, long believed to be a relatively stable and isolated system of planets, moons, and distant bodies, may have experienced a dramatic shift caused by an unexpected interstellar visitor.

However, planets may not be necessary for ... between 1 and 5 astronomical units in the solar system," they write. "To ...

Massive object passing through solar system is a better explanation for nature of orbits of Jupiter, Saturn and Neptune ...

The planet is experiencing significant atmospheric loss — about 2,00,000 tons per second — primarily composed of light gases ...

Joel Achenbach writes about science and politics for The Washington Post's National desk. He has been a staff writer for The Post since 1990. He started the newsroom’s first online column, Rough ...

People around the world will have a chance this weekend to catch what could be the year’s most stunning view of the largest planet in our solar system. Jupiter on Saturday will shine at its ...