(SOLO MISSION COMPATIBLE)
by Paul, Ann Dupuis and Jeff Siadek
An asteroid, big enough to cause an extinction level event, is on a collision course with the planet Gliese 847d aka Emily's World (which you happen to be on!). As the only UREF force on the planet, your job is to lift off, fly to the asteroid, land on it, place an explosive device, lift off and detonate the bomb before the asteroid reaches Emily's World.
Detonate the bomb on the asteroid.
As above but the asteroid is at least MD hexes from the planet when it detonates.