Almost everything you could want to know about the closest planet to the Sun, Mercury. Real HD photos and videos taken by the MESSENGER probe. We discuss the orbit, climate, geographical features ...

The elusive planet Mercury will shine bright in the evening sky ... See Jupiter and Venus in HD] By this time, Mercury will have faded in magnitude to -0.3 — only about half as bright as it ...

Mercury in HD CCD sensors on board NASA’s Messenger spacecraft have returned the first images from a spacecraft in orbit around the planet Mercury. The craft, launched back in 2004, is the first to ...

HD 209458b, shown in red in an artist's conception, is the first confirmed "cometary planet," experts say. Image courtesy G. Bacon, NASA/ESA Comet-like planets could be fairly common, expert says.

The star HD 195689 – also known as KELT-9 ... The rocky planet Mercury would be a molten droplet of lava at this temperature. KELT-9b, however, is a Jupiter-type gas giant.