NASA suggests Mars Sample Return to cost $4 billion and 10 years. Not really. in Science & Spaceflight Posted September 13, 2021 On 9/11/2021 at 11:19 PM, kerbiloid said: Roscosmos is wanting ... ...Yes, they do that a lot. Rarely does anything come of it. They still have issues actually DOING anything that doesn't involve hardware handed down by the Soviets.