... Our Moon's appearance changes nightly. ... The Moon always keeps the same face toward the Earth. ... Just after the Moon set but before the Sun rose in the early morning hours of 2000 August 12, meteors pelted the Earth from the direction of the constellation Perseus, while ions pelted the Earth from the Sun. ... In our neck of the Galaxy stars are too far apart to be in danger of colliding, but in the dense cores of globular star clusters star collisions may be relatively common. ... Shuttle Ferry ...