Bringing Mars Rocks to Earth: Our Greatest Interplanetary Circus Act July 28, 2020 IFTTT +3 NASA and the European Space Agency plan to toss rocks from one spacecraft to another before the samples finally land on Earth in 2031. NYT NYT > World > Europe NYTimes IFTTT NASA and the European Space Agency plan to toss rocks from one spacecraft to another before the samples finally land on Earth in 2031. NYT NYT > World > Europe NYTimes