The Oort Cloud is a theorized invisible spherical shell that surrounds the Sun.
The Hunter's Moon of October 2024 will be the largest full moon of the year thanks to its proximity to Earth. The moon ...
An icy comet that will take 80,000 years to return – if it survives the trip – is streaking across the sky this October.
The Tsuchinshan-ATLAS comet is visible from the Northern Hemisphere this month—and won't be back for another 80,000 years.
The comet—traveling about 44 million miles away—was observed from Earth for the first time earlier this month.
New photos of comet Tsuchinshan-ATLAS appear to show a faint "anti-tail" pointing away in the wrong direction. The puzzling ...
The passing of comet Tsuchinshan-Atlas is close enough to Earth, an estimated 44 million miles away, to see with the naked ...