Phenomenon
Libration
The Moon's gentle apparent wobble.
Slight oscillations let us see about 59% of the Moon's surface over time, instead of just 50%, due to orbital eccentricity and tilt.
Overview
Slight oscillations let us see about 59% of the Moon's surface over time, instead of just 50%, due to orbital eccentricity and tilt.
See also
Retrograde Motion
A planet apparently moving backwards among the stars.
Aberration of Light
Apparent shifts in star positions due to motion.
Solar Eclipse
When the Moon stands between Earth and Sun.
Lunar Eclipse
When Earth's shadow falls on the Moon.
Meteor Showers
Cosmic dust burning in our atmosphere.
Aurora (Northern/Southern Lights)
Solar wind painting the upper atmosphere.