This isn’t the famous sample reported last September, but another with different signs of past life we’re struggling to ...

Earth is still collecting scars from space, and scientists are only now learning to read them properly. Newly mapped impact craters, both on land and hidden beneath the oceans, are revealing that ...

Gas giants are large planets mostly composed of helium and/or hydrogen. Although these planets have dense cores, they don't ...

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...

The western U.S. is a geologists' dream, home to the Rocky Mountains, the Grand Canyon, active volcanoes and striking sandstone arches. But one landform simply doesn't make sense.

Have you been wondering why the northern lights are suddenly all over social media — and in the news? Noticed an unusually ...