New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once orbited in mathematical harmony around the infant sun.

Venus, often called Earth's "sister planet," shares striking similarities with our world,yet it has become one of the most ...

In 2020, scientists detected phosphine gas on Venus, a molecule linked to microbial life on Earth. New missions funded by ...

Aug. 12-13 — Peak of the annual Perseid meteor shower. Perseids are fragments shed by comet 109P/Swift-Tuttle. Every August, ...

Mercury begins to emerge from the dawn glow after Aug. 12. On Aug. 19, Mercury reaches its greatest elongation west of the ...