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Space sciences/Astronomy/Celestial bodies/Planets/Terrestrial planets/Solar terrestrial planets/Planet Mercury

Head outside one night this summer and look up. It's amazing what you can see.
Launched over ten years ago, the MESSENGER spacecraft from NASA is now reaching its final destination.
NASA's MESSENGER mission to Mercury needs your help naming geological features on the planet's surface!

Data from the MESSENGER spacecraft suggest that Mercury’s core is much bigger than researchers had realized, and that the planet’s surface has been through an unusually active evolution.