The Hranice Abyss — or "Hranická propast," in Czech — is the deepest known freshwater cave in the world. Geologists think it ...

The sun has unleashed the most powerful solar flare since 2017, just days after it spat out another monster explosion. Both ...

Six earthquakes were recorded at the Mount Adams volcano in September — a significant increase on the normal rate of one ...

The newfound wreck could help maritime archaeologists better understand how 20th-century warships were designed.

The Thule Inuit people and Norse both hunted walrus in the High Arctic in the 13th century, according to a new study.

On Oct. 2, a partial "ring of fire" solar eclipse was visible from the remote island of Rapa Nui, also known as Easter Island ...

The U.S. Federal Aviation Administration is investigating the uncontrolled reentry of part of a Falcon 9 rocket that ...

A gold coin unearthed at the site of a medieval fortress in Bulgaria indicates the wealth of the people who lived there ...

A new physical model suggests meltwater from thawing permafrost on Russia's Yamal Peninsula can unlock methane sources at ...

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Save $400 on one of the best telescopes — Celestron Advanced VX 8-inch EdgeHD is now 14% off at Adorama in this price drop ...

Save $60 and get the Celestron TrailSeeker 8x42 binoculars for $239.95 at Amazon — but you'll have to be quick as we've seen ...