One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Passing stars could trigger instability across the solar system, resulting in Earth being hauled out of its orbit.

The origin of life is one of the most fundamental and enduring questions of mankind and one of the three greatest Origin ...

Mars, often called the Red Planet due to its distinctive rusty color from iron oxide on its surface, is Earth’s neighboring ...

If you looked at the churning clouds near Jupiter’s pole, they appear like ocean currents on Earth — as if you’re looking at ...

The robotic spacecraft Psyche has regained propulsion after a snag cut its propellant system in April. Engineers had to ...