Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

Follow the space program since the moon landing in the four-part documentary "Once Upon a Time in Space". Here’s how to watch it anywhere on the planet. When you purchase through links on our site, we ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...

While the world slowly passed the first days of the year 2026, the astronauts aboard the International Space Station had already lived through the coming of the New Year in a way and a place few ...

For more than a century, physics has treated space and time as the smooth stage on which the universe unfolds, a flexible fabric that bends but never breaks. A new wave of theories is now challenging ...

Sending anything to Mars is a much more difficult process than it seems. In the 1960s, the Soviet Union tried (and failed) in its first nine consecutive attempts, and the US was only able to succeed ...