Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...

The moon's orbit isn't a perfect circle. Instead, it's more stretched out, kind of like an oval, which means its distance from Earth varies by about 30,000 miles (48,000 km). The surface of the moon ...

New simulations show carbon enabled Earth’s inner core to solidify under realistic cooling, solving the nucleation paradox.

This quiz will explore the science behind the scenery, the facts behind the familiar, and the wonders that make Earth a living planet.

Ice calves off the Breidamerkurjokull, a glacier in Iceland. Some scientists suggest prehistoric glaciers hold the answers to how life evolved on Earth. Katharine Cashman via imaggeo.egu.eu under CC ...

Scientists now believe that our galaxy is filled with solar systems, including up to a billion planets roughly the size of our own. The film employs advanced, data-driven, cinematic-quality ...

Select an option below to continue reading this premium story. Already a Honolulu Star-Advertiser subscriber? Log in now to continue reading. The exact sequence of events behind eukaryogenesis is ...