“The HLS schedule is significantly challenged and, in our estimation, could be years late for a 2027 Artemis 3 Moon landing,” said panelist Paul Hill, who is a former director of Mission Operations at Nasa. “The next six months of Starship launches will be telling about the likelihood of HLS flying crew in 2027 or by the end of the decade.”

SpaceX will launch NASA's ambitious IMAP mission and two other space weather probes early Tuesday morning (Sept. 23), and you can watch the action live.