Amazing arrivals
NASA pulled off two cool arrivals in 2011. The spacecraft Messenger entered Mercury's orbit and made history as the first artificial satellite to do so; and the spacecraft Dawn, which entered the asteroid belt that lies between Jupiter and Mars. Then, both crafts got down to business. Messenger instantly began to collect data "on the planet's geology, composition, and thin atmosphere," reports Space.com. While Dawn, sent to observe a space rock called Vesta, discovered that it "had a battered surface, sporting mountain ranges and deep craters," which advanced our understanding of asteroid composition. Proving, yet again, that there's so much still to learn about our universe.
12 of the Most Amazing Space Discoveries of the Last Decade, Source:https://www.rd.com/culture/amazing-space-discoveries-of-the-last-decade/
