Why the Moon has a tail

Scientists have known that the Moon has a tail, like a comet, since the late 1990s, but now they know where it comes from and why it's brighter sometimes than others.According to research published in the Journal of Geophysical Research: Planets by a team of Boston University physicists, the tail is made of millions of sodium atoms that are blasted into orbit by meteoroids hitting the Moon's surface. These are shaped into a tail by photons arriving from the Sun.

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