Did You Know?
Some asteroids are actually extinct comets.
Many objects classified as asteroids are actually the remnants of comets that have lost all their volatile materials. These 'dead comets' continue to orbit the Sun but no longer display the characteristic tails of active comets.
Did You Know?
The most distant human-made object is now in interstellar space.
Voyager 1, launched in 1977, became the first human-made object to enter interstellar space in 2012. It's now...
Did You Know?
Some galaxies have no dark matter.
NGC 1052-DF2 is the first galaxy discovered that appears to contain no dark matter, which challenges our understanding...
Did You Know?
There’s a planet with a surface temperature of 4,300°C, hotter than some stars.
KELT-9b is the hottest known exoplanet, with a dayside temperature hotter than many stars. It's so hot that...