Baby, I can see your halo 🌒😇
Astronaut Matthew Dominick on the International Space Station captured this photo of an arc shape, called a partial lunar halo, cradling the Moon on Sept. 4, 2024.
At the time of this photo, the Moon was positioned ‘behind’ Earth’s atmosphere relative to the ISS. Earth’s atmosphere – seen as layers of orange, white, and blue – acts like a lens, bending light that passes through it and toward the astronaut’s camera.
As that light passed through Earth’s upper atmosphere, it hit ice crystals that form when water vapor freezes onto tiny dust particles. These ice crystals bent, or refracted, the light, forming an arc that looks like a halo by the Moon!
Through NASA’s Artemis campaign, we’re learning more about our Moon than ever before. Next up is Artemis II, which will send a human crew to orbit the Moon for the first time in over 50 years. Follow nasaartemis for more updates.
Image description: A photograph of an arc-shaped strip of white light c...
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