What would happen if the sun started to dim? Scientists have revealed the terrifying answer to this question, which is the ...

Elon Musk spends plenty of time talking about Mars, but every now and then he swings back to the planet that actually needs ...

Little is known about the long-destroyed moon-forming planet, Theia. But it may have been born in the inner solar system—just like Earth—a new study suggests ...

A first ever detection of a coronal mass ejection from a small red dwarf could have big consequences for life on any nearby ...

It is a rare event for the solar system to receive a visitor from the vast, lonely void of interstellar space, and even rarer ...

For the first time, a fleet of orbiters and a rover circling another world has captured detailed views of an interstellar visitor as it swept through the inner solar system. As comet 3I/ATLAS brushed ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to ...

Emily Kwong and Regina Barber of NPR's Short Wave podcast talk about the evolutionary history of kissing, how moss spores fare in space, and new clues about the collision that created the moon.

Imagine catching a fleeting glimpse of a visitor from beyond your known neighbourhood, a traveller moving at impossible ...

Our Sun, that steady burning ball of gas that has faithfully illuminated Earth for billions of years, is slowly but ...

Researchers are racing to turn sunlight, water and carbon dioxide into a virtually inexhaustible stream of clean fuel, and a ...

A Star Trek–inspired idea by Miguel Alcubierre kicked off decades of theory and experiments as scientists pursue plausible ...