0But first, they have to get the lander on the ground, and that's 01b00where02b00 the worry comes in. In fact, they have a name for it in the Mars exploration community: "seven minutes of terror."02br 02br 00Can I replace where with when?02br 02br 00Thanks!0-
Top answer
0 That's the worrying bit/part0-
— Optilang
0 That's the worrying bit/part0-
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