For decades, scientists have had better maps of the Moon and Mars than of Earth’s own ocean floor. But thanks to NASA’s ...

of Earth and Planetary Sciences — to show how Earth will look in 250 million years ... Earth's appearance in the future, and he has made multiple animated maps based from his research.

As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

Mercury, the closest planet to the Sun, completes an orbit – a year for the planet – in 88 days. Earth's year ... on sea lions' backs to help them map the elusive ocean floor.

A sample from Bennu will return to Earth after a yearslong voyage and land in the Utah desert on Sunday Anna Lazarus Caplan is a writer-reporter for PEOPLE. She has been working at PEOPLE since 2022.