New research suggests the violent explosions of dying stars may have caused two of Earth’s biggest mass extinctions millions ...

More than 60 years after the first debunked discovery of a planet orbiting Barnard’s Star, the closest single-star system to ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

Last year, astronomers announced that a planet orbits Barnard’s star. Now, researchers have confirmed the existence of three more.

"There really is something very different about how these giant planets form versus how small planets like Earth form." ...

Astronomers have confirmed the existence of four planets orbiting a star less than 6 light-years away with help from some of ...

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

The mass extinction that killed 80% of life on Earth 250 million years ago may not have been quite so disastrous for plants, ...

A new study reveals that Earth's biomes changed dramatically in the wake of mass volcanic eruptions 252 million years ago.