Of all the planets in our solar system, Mercury is probably the most underrated. It does not feel like swirling clouds, rings or feathers. It does not even have an atmosphere. This small rocky body has a history of volcanism and even water ice in its craters. Mercury is also involved in a special resonance with Jupiter (think of a billion-year-old dance partner), and there is a possibility that Mercury may lose its balance in millions of years and be ejected from the solar system and maybe take Mars with it the way.
Just this week, our innermost planet reached its climax as it made a rare transit and passed in the right direction in front of the sun so people on Earth could see it. It was not until 2032 that the flight resumed. Only two spaceships have ever visited Mercury: Mariner 1
0 (1974 and 1975) and NASA's Messenger mission, which circled Mercury from 2011 to 2015 when it was desorbed and crashed to the surface. This week we'll get a little bit more familiar with the innermost world of the solar system.
While waiting for the next Mercury transit, take a look at it in the rest of the collection of space photos here.