An Astronaut Fist Bump

Celebrating the successful installation of the Cosmic Origins Spectrograph, Grunsfeld and Feustel share a historic astronaut fist bump.

John Grunsfeld and Andrew Feustel, celebrating the successful installation of the Cosmic Origins Spectrograph and repair of the Advanced Camera for Surveys:

Julianne Dalcanton
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An Astronaut Fist Bump

Celebrating the successful installation of the Cosmic Origins Spectrograph, Grunsfeld and Feustel share a historic astronaut fist bump.

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Julianne Dalcanton

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The Moon Is Moving Farther From Earth Each Year, and Tides Are the Reason

Humans Outlived Neanderthals Likely Because of Differences in Anatomy and Social Skills

Catch Shooting Stars During the Rare Chi Cygnid Meteor Shower This Weekend

Uranus's Moons: All 29 Orbit on Their Sides at a Tilt, and Have Mysterious Features

Potential Biosignatures on Mars May Reflect Ancient Life in Mineral-Rich Rocks

What Happened to the Aztec Empire? Lost Artifacts Help Rejuvenate Its Past

Asteroid Ryugu Was Once Packed with Water, Offering Clues on Earth's Habitability

A 242-Million-Year-Old Fossil Has Drastically Altered the Story of Lizard Evolution

JWST Helps Examine Atmosphere of Exoplanet 40 Light Years Away and in the Goldilocks Zone

Avoiding Armageddon: Experts Must Hit a Sweet Spot to Redirect an Asteroid

Ancient People Brought Animals From Far and Wide for Elaborate Feasts in Bronze Age Britain

A New Relative of the Kangaroo Has Just Been Discovered — Only They Are Already Extinct

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