Less than 1% of this dwarf planet candidate's orbit is close enough to detect, which means astronomers are lucky to have ...

Billions of years from now, the Sun will swell into a red giant, swallowing Mercury, Venus, and Earth. But that’s not the ...

A series of studies have cast doubt on the sensational claim that "the strongest evidence yet" was found that life exists anywhere else besides Earth.

Astronomers have discovered six asteroids that are ‘potentially dangerous to Earth’. But is there a reason to panic? Venus, ...

Yesterday, the company shared a presentation by founder and CEO Elon Musk on their plan for uncrewed and human Mars exploration and settlement. Calling the timeline ambitious is almost an ...

A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

Scientists hunting for Planet Nine, an elusive planetary body that could change our understanding of the solar system, have ...

Earth’s sister planet reaches greatest western elongation and dichotomy as the waxing Moon slides along the ecliptic in the ...

The CNSA said the Tianwen 2 mission is expected to accomplish multiple objectives through a single expedition, including the ...

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

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

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...