Mercury

Mercury is a terrestrial Planet and iron planet in our local Solar system. It is named after the latin equivalent of the Greek god Hermes, and is the 1st inferior, inner, and terrestrial planet in our system. This proximity to the Sun means the planet can only be seen at twilight. Due to lacking a thermal regulation and atmosphere, it's temperature varies widely, but never surpasses that of Venus. Mercury also has the smallest axial tilt of any planet.

Exploration
Three probes have visited Mercury: Mariner 10 and 11 in 1974 and 1975, and MESSENGER who disembarked into orbit at 2004 and crashed into the surface after being unstable in 2015. The BepiColombo twins as planned to launch in 2024 and go to Mercury, in a joint Japanese Aerospace-EU mission.