Mercury is so close to the Sun that it zips around in just 88 Earth days—but it rotates so slowly…
The Boötes Void is one of the strangest places in the universe—a vast region hundreds of millions of light-years across…
Titan, Saturn’s largest moon, has an Earth-like landscape with lakes, rivers, and even rain. But instead of water, these bodies…
Earth has some impressive volcanoes, but they’re nothing compared to Io, Jupiter’s chaotic little moon. Io is the most volcanically…
Not everything gets swallowed by a black hole. Some matter gets caught in powerful magnetic fields and blasted out at…
Some scientists believe that Earth once had a second moon—until it crashed into the one we have now. The theory…
Earth has a quasi-moon called 3753 Cruithne, a 5-km-wide asteroid that follows a strange horseshoe-shaped orbit around our planet. It…
The Sun’s surface is about 5,500°C (9,900°F), but its outer atmosphere—the corona—blazes at over a million degrees. That seems counterintuitive.…
In 2020, astronomers found a white dwarf star blasting through the Milky Way at 2.2 million km/h (1.4 million mph).…