A Blue Banded Blood Moon

Discover the universe! Each day a different image or photograph of our universe is featured, along with a brief explanation written by an astronomer.

December 1st, 2021.
The recent partial is shown in the featured image.
There was an eclipse of the Moon.
The red and blue band is caused by the sunlight.
Through the Earth's atmosphere.
Please see the explanation for more detailed information.

There is a blue-banded blood moon.
Angel Yu is the image credit.

What causes a blue band to cross the Moon during a lunar eclipse? The blue band is hard to see. The image of the lunar eclipse that was featured in the high definition image was digitally processed to equalize the moon's brightness and exaggerate the colors. The Moon's natural color is directly illuminated by sunlight. The upper left part of the Moon is not directly lit by the Sun since it is in the Earth's shadow. It is faintly lit by the sunlight that has passed through Earth's atmosphere. Earth's sunsets are red because air scatters away more blue light than red. The blue band is different because it is created by sunlight that has passed high through Earth's atmosphere, where red light is better absorbed by ozone than blue. The total eclipse of the Sun will be visible only near the South Pole.

Random APOD Generator is almost Hyperspace.
The picture is of a local group.

Robert Nemiroff is an author and Jerry Bonnell is an editor.
Phillip Newman has specific rights.
NASA has a privacy policy on the internet.
There is a service at NASA.
& Michigan Tech. U.

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Discover the universe! Each day a different image or photograph of our universe is featured, along with a brief explanation written by an astronomer.

December 2, 2021.
See the explanation. Clicking on the picture will bring you to the download page.
The highest resolution version is available.

The NGC 6822 is about the Barnard'sGalaxy.
Dietmar Hager, Eric Benson have rights to the image.

The grand spiral galaxies often show their young, bright, blue star clusters in beautiful, symmetric spiral arms. The small galaxies like the one called Barnard'sGalaxy form stars as well. 1.5 million light-years away, is where the Local Group of galaxies is located, and it is beyond the rich starfields in the constellation Sagittarius. The Small Magellanic Cloud is about 7,000 light-years across. The foreground stars in the sky are bright. Behind them, there is a large area filled with young blue stars and a bright glow of star forming regions in a deep color image.

Tomorrow's picture is of a comet.

Robert Nemiroff is an author and Jerry Bonnell is an editor.
Phillip Newman has specific rights.
NASA has a privacy policy on the internet.
There is a service at NASA.
& Michigan Tech. U.