NASA’s Mars Odyssey orbiter will today mark its 3,340th day making observations of the Red Planet,
longer than any other spacecraft in history.
After entering Mars’ orbit on October 24, 2001, the spacecraft has made countless contributions to space exploration.
In early 2002, Odyssey detected hydrogen just below the surface along the planet’s high-latitude regions.
Hypothesizing that the hydrogen is in frozen water, NASA sent the Phoenix missions to confirm the suspicion, a fact which was authenticated in 2008.
Read more: https://news.cnet.com/2300-11386_3-10005886.html#ixzz18PkSrZzW