Big Red & Lunar Earthshine

Evening Lunar Earthshine by Kevin

Evening Lunar Earthshine by Kevin

Our friends at EarthSky explain that lunar earthshine happens:

When you look at a crescent moon shortly after sunset or before sunrise, you can sometimes see not only the bright crescent of the moon, but also the rest of the moon as a dark disk. That pale glow on the unlit part of a crescent moon is light reflected from Earth. It’s called earthshine.

To understand earthshine, remember that the moon is globe, just as Earth is, and that the globe of the moon is always half-illuminated by sunlight. When we see a crescent moon in the west after sunset, or in the east before dawn, we’re seeing just a sliver of the moon’s lighted half.

Now think about seeing a full moon from Earth’s surface. Bright moonlight can illuminate an earthly landscape on nights when the moon is full.

Likewise, whenever we see a crescent moon, a nearly full Earth appears in the moon’s night sky. The full Earth illuminates the lunar landscape. And that is earthshine. It’s light from the nearly full Earth shining on the moon.

Read more at EarthSky.

Kevin captured the crescent moon hanging in the western sky over the “Big Red” Lighthouse at Holland State Park. See more in his gallery The Moon on Flickr.

More of and about the moon on Michigan in Pictures!

Support Michigan in Pictures with Patreon

3 thoughts on “Big Red & Lunar Earthshine

  1. Hi! Not sure if you have ever posted any of Mike Colter’s photographer. Mike was a retired Firefighter and Local Photographer. He passed away this weekend. At 62.
    patti

    Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s