Scientists may have found a planet orbiting two brown dwarfs at a wild 90-degree tilt—something never seen before.

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system ...

Stranded in space for 256 days, astronauts Barry Wilmore and Sunita Williams faced unexpected health challenges upon ...

SCIENTISTS have stumbled across a new Super-Earth that orbits inside its star’s habitable zone with a new alien-hunting tool.

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

According to astronomers, the last time this planet came close to the Sun was in 1930. In the same year, Pluto was discovered ...

Two new studies used gravity data to pull back the curtain on the deep interiors of the Moon and one of the solar system’s largest asteroids.

A new dwarf planet discovery in the outer solar system is challenging the long-standing theory of a hidden giant planet ...

There’s a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

A US-based trio hunting this elusive world has stumbled on what appears to be a new dwarf planet in the solar system's outer ...