"The United Arab Emirates’ orbiter reaches Mars on Tuesday, followed less
than 24 hours later by China’s orbiter-rover combo. NASA’s rover, the cosmic
caboose, will arrive on the scene a week later, on Feb. 18, to collect rocks for
return to Earth — a key step in determining whether life ever existed at Mars.

Both the UAE and China are newcomers at Mars, where more than half of
Earth’s emissaries have failed. China’s first Mars mission, a joint effort with
Russia in 2011, never made it past Earth’s orbit."

See:

https://apnews.com/article/russia-ch...d09795a0a23b82