Did You Know?
Black holes create the perfect pitch of B-flat.
NASA's Chandra X-ray Observatory detected sound waves emanating from a supermassive black hole in the Perseus galaxy cluster. The note is B-flat, 57 octaves below middle C, far too low for human ears to hear.
Did You Know?
A day on Mercury is twice as long as its year.
Due to Mercury's slow rotation and fast orbit, it takes 176 Earth days for the Sun to move...
Did You Know?
The largest storm ever observed was bigger than Earth itself.
The Great Dark Spot on Neptune, observed by Voyager 2 in 1989, was large enough to contain the...
Did You Know?
Europa shoots water into space from 125-mile-high geysers.
Jupiter's moon Europa has massive water plumes that shoot from cracks in its icy surface. These geysers are...