Unlike Earth’s golden sunsets, the Martian sky turns blue at dusk. This happens because of how fine dust particles in…
Some scientists believe the Oort Cloud could be hiding rogue planets—worlds that were ejected from the solar system long ago…
Asteroids aren’t always solitary. Some, like Ida, have tiny moons orbiting them. Even more surprising, some asteroids are actually binary—two…
The Oort Cloud, a vast shell of icy objects surrounding the solar system, is where most long-period comets come from.…
Despite what sci-fi movies show, the asteroid belt between Mars and Jupiter is mostly empty space. The asteroids are spread…
The Hoba meteorite in Namibia is the largest intact meteorite ever discovered. It weighs around 60 tons and is mostly…
Scientists have found amino acids—the building blocks of proteins—in meteorites that fell to Earth. The Murchison meteorite, which landed in…
Contrary to what you might think, a comet’s tail doesn’t trail behind it like a rocket plume. Instead, the solar…
Halley’s Comet is the most famous of all comets, visible from Earth about every 76 years. Last seen in 1986,…