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

The second half of the 19th century was a particularly interesting time to imagine Mars. This was a period during which the ...

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

A superbright Mars is currently visible alongside Regulus, the "Heart of the Lion" star located around 79 light-years from ...

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

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

What do the clouds on Jupiter, dust storms on Mars and rainstorms on Titan all have in common? They look like they belong on ...

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