After toilet and email issues, Artemis II astronauts fire engine to head for the moon

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Robert Madden / Colorado State University

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Jim Watson / AFP via Getty Images

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Jim Watson / AFP - Getty Images

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Launch fever hits Florida as visitors flock to NASA's moon launch

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Sam Lott / NASA via AP

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Last man on the moon reflects on his experience and the Artemis II mission

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The surprising science behind squeaking sneakers

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NASA astronaut shares more details on medical emergency that prompted first-ever ISS evacuation

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A new study examines how time in space impacts astronauts' brains, possibly having big implications for the future of space flight. Scientists discovered that parts of the brain moved up to 2mm in the skull after periods spent in a zero gravity environment. NBC News' Tom Costello reports on the new findings as NASA is due to bring home its astronauts early due to an undisclosed medical emergency.

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Going the farthest: Meet the four astronauts on NASA's Artemis II moon mission

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This rare disease destroys a child's ability to walk and speak. Could a new drug help?

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He walked on the moon in 1972. This is his advice for the Artemis II astronauts.

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As Western heat wave ends, scientists try to make sense of its length and intensity

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Inside NASA's giant Artemis II rocket as it gears up for a historic moon mission

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NASA astronaut says his medical scare remains a mystery

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Arctic sea ice hits lowest winter level as unprecedented heat smashes records all over Earth

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Saving the snow for next year: Ski resorts try 'snow farming' as temperatures rise

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Colorado residents face earliest-ever water restrictions — a harbinger of worse to come

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NASA's Artemis II moon mission is a go after decades of delays and many billions of dollars

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Clones of Stumpy, Washington, D.C.'s beloved cherry blossom tree, have flowered for the first time

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Pete Hegseth has intervened in military promotions for more than a dozen senior officers

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FBI labels suspected China hack of law enforcement data 'a major cyber incident'

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From Trump's attorney to the Epstein files: Todd Blanche's rise to attorney general

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Gucci Mane was the target of a kidnapping plot by a fellow rapper, DOJ says

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Pete Hegseth fires Army's top officer and two other generals

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As Trump rails against NATO, secretary general heads to Washington

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EPA takes first step to regulate microplastics in drinking water

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Why Trump's options to replace Pam Bondi may be limited: From the Politics Desk

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Judge dismisses most claims in Blake Lively's lawsuit against Justin Baldoni

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Is America on the cusp of a farm crisis?

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From The Sports Desk: Final Four redux

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He scored 83 points in an NBA game, but his best talent still hasn't been recognized

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Florida vice mayor found dead in her home; husband charged with murder

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Trump doesn't have to turn over presidential records, Justice Department says

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'Summer House' scandal: What to know about Amanda Batula and West Wilson's romance

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Trump fires Pam Bondi as attorney general

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Trump says he'll sign order to pay all DHS workers as shutdown drags on

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Ancient golden helmet stolen in Dutch museum heist is recovered a year later

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