MESSENGER was inserted into orbit around Mercury yesterday, March 17th. Launched on August 13th, 2004, MESSENGER has been in interplanetary flight for over six and a half years! I bet that after this long waiting, the MESSENGER team is thrilled to finally be in orbit. As for me, I think visiting Mercury ROCKS!
MESSENGER is a NASA Mercury orbiter. It’s name is an acronym for MErcury Surface, Space ENvironment, GEochemistry, and Ranging. One of its goals is to learn about the topography of Mercury’s surface, and another is to find out the composition of its atmosphere.
On its way to Mercury, MESSENGER has had one Earth flyby, two Venus flybys, and three Mercury flybys. In one of these Mercury flybys, volcanism on the surface and water in the exosphere were discovered. Also on the way to Mercury, MESSENGER took this ROCKIN’ “family portrait” of our Solar System:
There’s a lot about Mercury we’ve found because of MESSENGER. For example, could you imagine seeing a whole side of a planet which you’ve never seen before? MESSENGER gave us just that in this picture:
The instruments on board will be turned on and checked on the 23rd of March, and on the 4th of April the mission’s primary science phase begins. I look forward to seeing what new discoveries are made about our amazing innermost planet!