1.   A hotel that circles the moon will be a prelude to a hotel on the moon.

2.   The crews aboard two early Apollo spacecraft circled the moon, paving the way for the first landing.

3.   They were to have explored the Fra Mauro highlands while Swigert circled the moon waiting for them.

4.   As the world held its breath, the crew had to move into the lunar module and steer a perilous emergency route circling the moon to return to earth.