New evidence shows that, far beyond Pluto, there may exist a hypothetical planet referred to as Planet X or Planet Nine.

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

Before 3I/ATLAS, the only other confirmed interstellar tourists we've seen were the now-famous, cigar-shaped 'Oumuamua' in ...

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 ...

An 80-year-old Eltingville man is finally getting a financial and energy reprieve after his solar power system failed.

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

Images captured by NASA's Parker Solar Probe as the spacecraft made its record-breaking closest approach to the sun in ...

How Arizona’s Mesquite Solar complex became one of the nation’s largest solar sites and what its growth reveals about the ...

Unravel the cosmic enigma with our latest video on the elusive "Planet Nine"! Join the quest as astronomers explore ...

Interstellar comet 3I/ATLAS is now visible in the UK night sky! The third confirmed alien visitor, whose chemical fingerprint is 'older than our Sun', makes its unrepeatable, 221,000 km/h flyby. Get ...

Astronomers have produced the first continuous, two-dimensional maps of the outer edge of the sun's atmosphere, a shifting, ...

Several sugars have been found on a sample of the asteroid Bennu, which may provide scientists with clues about our early ...