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microlensing illustration

QUICK FLASH  The light from a distant star may temporarily brighten when a free-floating planet passes in front of the star. This artist’s illustration shows how a rogue planet’s gravity distorts and focuses distant starlight as a ring around the planet.

moon false-color image

ANCIENT ATMOSPHERE  This false-color image shows high (red) and low (blue) terrains on the moon’s surface (near side, left; farside, right), which could preserve a record of the early lunar atmosphere.

Kepler-452b and Kepler-22b

PLANETARY COUSINS Planets may be lumped into two groups: smaller and rocky like Kepler-452b (left), or bigger and gassy like Kepler-22b (right).

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