News for Norther Colorado and the world

Monday, May 27, 2024

Sky Tonight—May 15, Earth shadow, Belt of Venus in east after sunset

Courtesy of EarthSky
A Clear Voice for Science

Visit EarthSky at

Here’s a lovely photo of the Earth’s shadow, which can be seen any clear evening ascending in the eastern sky at exactly the same rate that the sun sets below the western horizon. The shadow is a deep blue-grey – darker than the blue of the twilight sky.

The pink band above the shadow is called the Belt of Venus.

The shadow of the Earth is big. You might have to turn your head to see the whole thing.  The shadow is curved, in just the same way that the whole Earth is curved. Earth’s shadow extends hundreds of thousands of miles into space, so far that it can touch the moon. Whenever that happens, there is an eclipse of the moon.

Check out Earth’s shadow – in the east at sunset – next time you have a clear sky. I often see it while out on the streets of my town as the sun is setting.

By the way, this image shows more or less the same moon phase that you will see tonight. It will be a waxing gibbous moon that will be visible in the east after sunset this evening. Full moon will come on May 17, 2011.

This image is the full moon at the Woomera missile range in Australia. Used with permission.

Understanding moon phases

Understanding waxing gibbous moon

Can you tell me the full moon names?

By Deborah Byrd


Astronomy Picture of the Day from NASA/JPL

EarthSky: Space

CHANDRA Photo Album

U.S. Naval Observator Astronomical Information center

Universe Today

StarDate Online

Sky and Telescope

National Geographic

Space Com

Simostronomy Blog

Amazing Space

The York County Astronomical Society

Scope City

James S McDonnell Planetarium

Print This Post Print This Post