Jupiter, as always, is a dazzling object, shining among the stars of Gemini the Twins. It reaches opposition on Jan. 10; this ...

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

Not all planets are lucky enough to live in a neighborhood like our Solar System – some are doomed to roam the cosmos alone.

The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how ...

A Carnegie-led team of astronomers detected the strongest evidence yet of an atmosphere around a rocky planet beyond our ...

Gaia data reveals signs of planets forming around young stars by measuring stellar motion, identifying planetary, brown dwarf, and stellar companions in early star systems ...

A colossal Martian volcano defies everything we know about planetary geology. Hidden clues beneath its frozen summit hint at ...

In 2026, there will be journeys to the moon and Mars, new visions of the cosmos and a solar eclipse that might be worth ...

From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet ...

As the new year dawns, the solar system's two largest planets put on fine shows in the evening sky. Saturn continues to ...