I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

The ultra-rare object is travelling at about 245,000 kilometres an hour and will fly deep into the solar system, skimming past Mars.

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to oblivion ...

Recent observations have revealed carbon monoxide venting from the largest comet ever seen, providing clues about its origins ...

The average solar panel has a power output rating of 250 to 400 watts (W) and generates around 1.5 kilowatt-hours (kWh) of energy per day. Most homes can meet energy needs using 20 solar panels ...

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

WASHINGTON, May 30 (Reuters) - Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet ...