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Which alien stars can see Earth?

A new catalogue identifies thousands of nearby stars that could spot Earth’s transit across our Sun.

A view of Earth and Sun from thousands of miles above our planet. Stars that enter and exit a position where they can see Earth as a transiting planet around our Sun are brightened.
A view of Earth and Sun from thousands of miles above our planet. Stars that enter and exit a position where they can see Earth as a transiting planet around our Sun are brightened. Credit: OpenSpace/American Museum of Natural History