Mars may have once possessed an ocean at least as large as Earth's Arctic Ocean, a new study suggests. Previous research ...

What is “down” in the vastness of space? Scientists reveal how gravity, cosmic planes, and perspective redefine direction, ...

A decade of observations of four planets around the young planetary system V1298 Tau revealed a rare, long-sought missing ...

Our neighbor Mars would hold a significant influence over Earth's climate. New research indicates that its gravity durably ...

At the beginning of the exoplanet age, the goals were fairly simple. The first was to find as many of them as possible to ...

A new study suggests lunar soil contains elements that solar wind transported to the moon from Earth’s atmosphere, solving a ...

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

A new study reveals a rare-breaking white dwarf star, dubbed RXJ0528+2838, that is somehow generating a rainbow-like "bow ...

Unfortunately for planet hunters, Mercury, Venus and Mars are all too close to the sun to observe; they will come out of the ...

Earth’s deep interior may hold water equal to today’s oceans, challenging long-held views of how the planet became habitable.

In a new study, scientists used advanced computer models to peer beneath Jupiter's dense swirling cloud tops and tackle a ...

Data from the Kepler project has confirmed a new world that fulfills the telescope's goal of locating Earth-sized planets ...