Four new elements added to periodic table

The new elements - elements 113, 115, 117 and 118 - complete the periodic table's seventh row and make science textbooks around the world instantly out-of-date.

Andromeda galaxy in high-energy X-rays

A space mission turned its X-ray vision on the Andromeda galaxy and spotted 40 X-ray binaries, exotic objects thought to play a role in our universe's evolution.

New glimpse of geology under Antarctic ice

Using technology built to withstand the harsh winters, scientists have managed to map the volcanos, rifts, and basins hidden under West Antarctica's ice sheet.

What is the Anthropocene?

Soon, scientists will decide whether the word Anthropocene should be formally added to the Geologic Time Scale. It indicates a world shaped by human beings.

Quarter moon, Earth perihelion, neap tide

The last quarter moon combined with Earth at perihelion should usher in a gentle neap tide, with little variation between high and low tide over the next few days.

After 8 years, Dawn probe brings Ceres into closest focus

Dawn spacecraft now in its closest orbit of dwarf world Ceres. Mission Director Marc Rayman explains how the mission will help unlock our solar system's secrets.

Earth ABCs from space

HNY - Happy New Year! All 26 letters of the alphabet, spelled out in Earth's features as seen from orbit.

Why does the new year begin on January 1?

New Year's Day is a civil event. Its date isn't precisely fixed by any natural seasonal marker.

Curiosity’s 10 best images of Mars in 2015

As of December, 2015, Curiosity has acquired over 292,000 images from Mars' surface. Here are our picks for the top 10 images by the rover in 2015.

Giant squid surfaces in Japanese harbor

Rare encounter with a giant squid. First one caught on camera was in 2012.