- By Mashable
Mars is getting crowded. NASA's Perseverance rover has successfully landed on Mars and sent back pictures. The rover's arrival comes as Mars exploration is on the rise. The United Arab Emirates's Hope orbiter has been circling Mars since early February as has China's Tianwen-1, which is expected to drop its rover on Mars in May. We've been sending probes and robots to Mars since the 1960s, but 2021 might be the most illuminating year in the history of Mars research.