In approximately five years, if everything goes to plan, a small sealed canister containing roughly two pounds of Martian dirt and rock will arrive on Earth — and for the first time in the history of the species, humans will be able to hold a piece of another planet in their hands. The dirt and [...] The post In 2028, China plans to launch the Tianwen-3 mission to the surface of Mars, drill two metres into Martian rock, collect at least 500 grams of soil and stone, and return those samples to Ea