The most impressive feature on Mercury is the Caloris Basin, a vast, multi-ringed crater over 800 miles across, which is ...

Mercury will reach its greatest eastern elongation on Oct. 29, marking one of the best evenings to see the planet this fall as it appears farthest from the sun's glare in the twilight sky. As the ...

Look low on the southwestern horizon at sunset on Nov. 12 for a chance to see swift Mercury close to the red light of Mars in the evening sky, but fair warning — you'll need to be quick to spot the ...

If you've never sighted this rocky little world for yourself, you'll never get a better opportunity than right now to see it. When you purchase through links on our site, we may earn an affiliate ...

The planet Mercury is the closest planet to the sun, and also the most difficult for spacecraft to visit and explore. This is because as spacecraft get closer to Mercury, the sun's enormous gravity ...