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The 2,000 stars where aliens would catch a glimpse of Earth

Scientists searching for extraterrestrial life should narrow their hunt to stars and planetary systems that have an occasional view of Earth as it passes in front of the Sun.
  1. Alexandra Witze
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Astronomers have pinpointed more than 2,000 stars from where, in the not-too-distant past or future, Earth can occasionally be detected transiting across the face of the Sun.

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doi: https://doi.org/10.1038/d41586-021-01692-7

References

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