Figure 2 (IMAGE)

Kavli Institute for the Physics and Mathematics of the Universe

Figure 2

Caption

As the Subaru Telescope on Earth looks at the Andromeda galaxy, a star in Andromeda will become significantly brighter if a primordial black hole passes in front of the star. As the primordial black hole continues to move out of alignment, the star will also turn dimmer (go back to its original brightness).

Credit

Kavli IPMU

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