Was there ever life on Mars? NASA may have found evidence, but retrieving it could cost $7.7 billion

NASA has revealed two new strategies to bring back rock and dust samples from Mars collected by Perseverance rover. The aim is to return these samples by the 2030s. The plans involve using either the previous sky crane technology or commercial heavy-lift vehicle landers. This initiative is expected to cost between $5.5 billion and $7.7 billion.