Many people report seeing earthshine on a waxing crescent moon. That’s when the darkened portion of the crescent glows dimly with light reflected from Earth.
2019’s first new moon comes on January 5 or 6, depending on your location on the globe. It’ll cause a partial solar eclipse, visible primarily from Asia.
The next last quarter moon falls on December 29, 2018, at 09:34 UTC. A last quarter moon rises around midnight and sets around noon the following day.
The solstice is December 21, 2018 at 22:23 UTC. The full moon falls less than a day later, on December 22 at 17:49 UTC.
The 1st quarter moon comes on December 15 at 11:49 UTC. A 1st quarter moon is high up at sunset. It appears half-illuminated, like half a pie. Really, you’re seeing half the moon’s day side.
It’s rare to see a moon within 24 hours of new moon. This week, we received a couple of images of even-younger moons. What’s the youngest moon you can see? Info and pics here.
A waning gibbous moon is a moon between full and last quarter. Watch for this moon phase from late night through early morning.
A waxing gibbous moon appears more than half lighted, but less than full. It rises before sundown and sets somewhere between midnight and dawn.
A waning crescent moon is up in the east before sunrise. It’s waning toward new moon, when the moon will be between the Earth and sun.
One Earth. One sky. One moon phase (more or less) from all of Earth. So why (and how) does the moon look different from different parts of Earth?
The most important key is to think of the moon as a world in space, with a day and night side.
Half the moon always faces us. And half the moon is always lit by the sun. But, in the language of astronomers, there are no ‘half moons.’
See it! Venus and Jupiter before sunup
The total lunar eclipse of January 20-21