The system is believed to be traveling at least 1.2 million miles per hour (1.93 million kilometers per hour), according to a ...

A European Space Agency telescope has discovered its first "extremely rare" Einstein ring in a galaxy "not too far away" ...

Predictions are uncertain, but the solar system may be pushed farther from the galactic core or even ejected entirely from ...

"They are everywhere!" A terrifying finding made in a solar system void. The discovery of a record-mass stellar black hole in our galaxy.

Scientists using data from the European Space Agency’s Gaia mission have made a groundbreaking discovery: a massive exoplanet ...

Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, the pair sets a new record for the fastest-moving exoplanet system, nearly ...

New research from the SAGA Survey, comparing the Milky Way with 101 similar galaxies, unveils how our galaxy differs ...

Hypervelocity stars (HVSs) were first theorized to exist in the late 1980s. In 2005, the first discoveries were confirmed.

Data from the Gaia spacecraft shows that even unassuming stars can host monumental companions like massive planets.

"With an orbital period of 570 days, it is a relatively cold gas giant planet," said Guðmundur Stefánsson of the University ...

Gaia-4b is considered a super-Jupiter planet, a relatively cold gas giant, orbiting its star over 570 Earth-days. That star ...