The Gaganyaan Mission is at a critical stage this year with three important missions scheduled for this year, ISRO Chairman Dr S Somanath told NDTV. "We are at a critical juncture with Gaganyaan this year. We have three important missions scheduled. First and foremost is the unmanned mission to orbit, spend time in orbit and return; the second is a test about equipment and algorithm; the third is a test to check the launch pad scenario," he said.