Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. A few evenings ago I found myself in a remote layby in Utah close to ...

As part of Project Mercury, NASA prepared to send a chimpanzee, Ham, into space to test the effects of space on a living creature. Explore Subscribe Newsletters Content Licensing Our Partners ...

Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

Mercury is the closest planet to the Sun, residing just 36 million miles from our Solar System’s center. However, not too far above its surface, the European Space Agency’s BepiColombo probe has taken ...

On January 9, 1959, NASA selected the McDonnell Aircraft Corporation to develop the Mercury spacecraft, which would later carry the first American astronauts into space, Alan Shepard and Virgil ...

Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...

Mercury ' s inner core is solid and about the same size as Earth ' s inner core, a new study using observations from NASA's MESSENGER mission has indicated. Mercury is the smallest planet in our ...

A layer of diamonds was found beneath Mercury's surface. This could help scientists understand the planet's unusual magnetic ...

Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

As part of Project Mercury, NASA prepared to send a chimpanzee, Ham, into space to test the effects of space on a living creature. 5 Record-Breaking Bird Migrations (02:56) Pesto the Enormous ...