"A three-body problem is extremely complicated. Now we're dealing with four: the sun, Earth, the moon and Mars. The heavy lifting was more challenging than I initially thought." When you purchase ...

Hayli Gubbi, a shield volcano in northern Ethiopia, erupted for several hours on the morning of Sunday, Nov. 23 — the first eruption since the start of the Holocene. When you purchase through links on ...

As Americans celebrate Thanksgiving this year, Europe's deadliest conflict since World War II rages on despite hints of progress in President Donald Trump's accelerated peace efforts. Russian advances ...

ON AN OCTOBER night in 1989, a 4-year-old girl was shocked awake by a phone ringing and then a scream. She crept out of her bedroom and tiptoed barefoot along the hallway’s clammy vinyl tile, ...

"This signifies a major development in astronomy and physics." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists may have "seen" dark ...

Is time real, or an illusion? The best answer may be neither: Both physics and philosophy suggest that time is a projection of the mind onto a timeless reality. When you purchase through links on our ...

Stranger Things fans noticed a striking similarity between Mr. Clarke's wormhole drawing and Will's vision of Vecna's plan. While talking about wormholes, Mr. Clarke says they allow time travel. Fans ...