The Sahara Desert was once filled with rivers, giant lakes and hippos. Scientists explain why it turns green every 20,000 years

For most people, the Sahara is the ultimate symbol of endless sand, scorching heat and one of the harshest environments on ...

He’s the Last Great Land Artist You’ve Never Heard Of

Charles Ross spent 50 years building “Star Axis,” a naked-eye observatory in New Mexico. Now his masterwork is ready. How to share it with a changed world?
Morning Overview on MSN

Astronomers say they caught the birth of a magnetar, the magnetic engine behind the brightest blasts

A team of astronomers studying superluminous supernova SN 2024afav has detected a periodic, accelerating signal in its light ...
list25 on MSN

100 mind bending facts about time: prepare to rethink realit

Explore 100 Mind Bending Facts About Time That Break Every Rule. From relativity to the block universe, discover how physics, ...
La Brújula Verde

Ancient astronomers considered it one of the brightest stars in the sky, but it barely shines: researchers solve the mystery

Almost two millennia ago, in the year 137 AD, Claudius Ptolemy included in his famous Almagest a list of the brightest stars ...
NPR

Ukraine invasion — explained

The roots of Russia's invasion of Ukraine go back decades and run deep. The current conflict is more than one country fighting to take over another; it is — in the words of one U.S. official — a shift ...