Astronomy is the study of stars, planets and the vast space beyond Earth. Every so often, scientists spot an event so unusual that it challenges what we think we know about the universe. Among ...

A tremendously large cloud that blocked the light from a distant star has been found to consist of swirling winds of ...

For the last hundred and fifty years or so, geologists have been trying to wrap their heads around the mystery: in some places, the geologic record just seems to jump by over a billion years. And last ...

Description: While over 8 billion people have called Earth home for thousands of years, there are still many great mysteries ...

They won't say what went wrong (or for whom), but we do know what equipment helped ensure all astronauts returned safely.

Scientists trace Earth’s long cooling to falling ocean calcium, pulling CO₂ from the air and offering new insight into a greenhouse mystery.

The history of the planet and the civilizations that have lived on it are among life’s greatest mysteries.People have roamed ...

After years of speculation, scientists finally believe they have figured out the crystal conundrum thanks to new imaging from ...

A 66 million-year-old mystery behind how our planet transformed from a tropical greenhouse to the ice-capped world of today has been unraveled by scientists. Their new study has revealed that Earth's ...

Astronomers have found a massive cloud of metallic winds orbiting a mystery object in space. The cloud was found when ...

Water sources are being depleted faster than they can be restored, according to a new report from United Nations researchers.

Astronomers have long searched for clues that a hidden companion star sits out of view near the red supergiant star ...