Astronaut Don Pettit took this stunning photo of a nearby comet from the International Space Station ...

So I grabbed my camera, ran outside, and looked up just as Mars was supposed to emerge from the Moon's curved horizon. Seen ...

The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes ...

A new way of measuring structures deep inside Earth has highlighted numerous previously unknown blobs within our planet's ...

New observational data from the James Webb Space Telescope and simulation models have confirmed a new type of planet unlike ...

NASA astronaut John W. Young, commander of the Apollo 16 mission, took a far-ultraviolet photo of Earth with an ultraviolet ...

A 2023 satellite image captured a pair of peculiar phenomena painting parallel swirls in the sea and sky around Norway's Bear ...

A Yale study reveals that elevated marine iodine concentrations disrupted the stabilization of Earth’s ozone layer, delaying ...

These fragments of our surface do have a tendency to sink into Earth's mantle when they lose out in the plate-on-plate ...

A new analysis of marsquakes measured by NASA’s InSight lander indicates Mars has a solid inner core – but other researchers ...

Three-million-year-old tools found in Kenya reveal early humans' ability to cut food, butcher meat, and adapt to new diets.