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Mission to Save Falling NASA Space Telescope Suffers Setback
A spacecraft meant to push NASA’s Swift Observatory to a higher orbit malfunctioned and started tumbling several days ago. Engineers think it can still succeed.
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Dark Sky Defenders Raise Alarm Along the Border of West Texas
Residents fear that the Trump administration’s plans to build a border wall will threaten the region’s spectacular starry skies.
Alan Hale, Sky Watcher Who Created a Comet Sensation, Dies at 68
In 1995, he and Thomas Bopp spotted, from different states, the same mysterious object in the sky. What turned out to be a comet was named after them: Hale-Bopp.
