Green Matters on MSN
NASA astronauts capture rare lunar halo glowing around the moon
Depending on its position, the Sun passes its light through combinations of these materials to cast glowing patterns of ...
How does a lunar halo form? Halos are often the result of ice crystals in cirrus clouds. When moon or sunlight shines through these crystals, the light refracts or bends. In this case, it does so at ...
An astronaut on the ISS photographed a "lunar halo" over the Indian Ocean, revealing ice and rare optical phenomena from ...
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