Neptune is called an “ice giant” because it’s mostly made of a thick, slushy mix of water, methane, and ammonia, which ...

For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

How did Earth, alone among the solar system's rocky planets, become the home for life? How, among all this frigid ...

As the Axiom Mission 4 (Ax-4) crew, piloted by Indian astronaut Shubhanshu Shukla, enters their final week aboard the International Space Station (ISS), they remain laser-focused on completing a ...

Sci-fi fans can save big on Babylon 5: The Complete Series at Amazon. The Blu-ray box set carries a retail price of $135, but ...

Launched in 1977, the Voyager probes embarked on a journey unlike any in human history. Over four decades later, they continue to send data from interstellar space, offering insight into the outer ...

There are dozens of excellent science fiction books and series out there, many of which are considered classics and remain in circulation even decades after the ...

Sci-fi shows are full of compelling leads and main characters, but here are 10 side characters who stole their shows.

Turko-Mongol ruler Tamerlane destroys Baghdad, killing 20,000. 1540: Henry VIII annuls his six month marriage to his fourth wife ...