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Earth

Night-shining ‘noctilucent’ clouds have crept south this summer

Clouds high in the atmosphere that catch the sun’s rays even after sundown may be seen farther from the poles due to an increase in moisture in the air.

Astronomy

Gaps in gas disks around stars may not always mark newborn planets

New research has prompted a rethink of the theory that gaps in planet-forming disks around young stars mark spaces where planets are being created.

Planetary Science

Accolades, skepticism and science marked Science News’ coverage of Apollo

Science News’ coverage of the Apollo program stayed focused on the science but also framed the moon missions in the broader social and political context of the era.