Solar System

A curious connection between an ancient supernova and virus diversification in one of Earth's biggest lakes means that crazy cosmic events may have had more influence on our planet than we thought.

A stunning "parade of planets" will grace the night sky this week, with all seven of Earth's celestial neighbors joining the show. Here's how to spot it and why it happens.

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.

New simulations reveal that around 1 million "macroscopic" objects from our closest stellar neighbors, the Alpha Centauri system, may already reside in the Oort Cloud, far from sight.

On this day 35 years ago, NASA's Voyager 1 spacecraft took a picture that changed how we see our planet. The iconic "Pale Blue Dot" image is just as awe-inspiring today.

A 'false dusk' will be visible during twilight in February, but only from locations that are free of light pollution. Here's everything you need to know about zodiacal light.

In a cosmic coincidence, Venus — the planet named for the Roman goddess of love — will be at its brightest and best on Valentine's Day. Heres where and when to see it.

NASA's Juno spacecraft has discovered a giant volcanic hot spot on the surface of Jupiter's hellish moon Io. The eruptions in this area are chucking out six times the energy being produced by all Earth's power stations, researchers say.

Mercury takes only 88 Earth days to orbit the sun.

Mars' southern hemisphere absorbs a lot of the sun's energy during the Red Planet's spring, and that may be causing Mars' dust storms, a new study suggests.