Mercury is a planet that just doesn't make sense. It's incredibly small yet hosts a relatively massive core. Mercury is so strange that astronomers have not been able to explain its properties with ...

One week ago, NASA's MESSENGER spacecraft transmitted to Earth the first high-resolution image of Mercury by a spacecraft in over 30 years, since the three Mercury flybys of Mariner 10 in 1974 and ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. An inner planet that pings around the Sun in a mere 88 days, ...

It’s a world where the Sun stops in the sky at noon and spins a small circle. Where you’d celebrate your annual birthday twice every day. In places, it’s as cold as the temperature of liquid air; ...

Caloris in Color – An enhanced-color view of Mercury, assembled from images taken at various wavelengths by the cameras on board the MESSENGER spacecraft. The circular, orange area near the center-top ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. David Rothery, Professor of Planetary Geosciences, ...