STS-109 "Columbia" (March 1–12, 2002). STS-109 was the fourth Hubble Space Telescope (HST) servicing mission. The STS-109 crew successfully upgraded the Hubble Space Telescope leaving it with a new power unit, a new camera and new solar arrays. HST servicing and upgrade was accomplished by four crewmembers during a total of 5 EVAs in 5 consecutive days. The space walkers were assisted by crewmates inside Space Shuttle "Columbia". STS-109 orbited the Earth 165 times, and covered 3.9 million miles in over 262 hours, culminating in a night landing at Kennedy Space Center, Florida.