Did You Know?
Some exoplanets orbit around dead stars.
Several planets have been discovered orbiting pulsars, the incredibly dense remnants of exploded stars. The first confirmed exoplanets were found orbiting pulsar PSR B1257+12. These planets either survived their star's death or formed from the debris afterward.
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...