Michael Sheetz Profile picture
Dec 6, 2021 11 tweets 4 min read Read on X
NASA announces the 2021 class of 10 astronaut candidates:

Nichole Ayers
Marcos Berríos
Christina Birch
Deniz Burnham
Luke Delaney
Andre Douglas
Jack Hathaway
Anil Menon
Christopher Williams
Jessica Wittner
Nichole Ayers, 32, is a U.S. Air Force major from Colorado, with more than 200 combat hours – and one of the few women currently flying the F-22 fighter jet.
Marcos Berríos, 37, is a U.S. Air Force major from Puerto Rico, and is a helicopter test pilot who holds degrees in mechanical engineering from MIT and Stanford.
Christina Birch, 35, is from Arizona and has a doctorate in biological engineering from MIT, and has won multiple national titles cycling for the U.S. National Team.
Deniz Burnham, 36, is a U.S. Navy lieutenant from Alaska who holds degrees from UC San Diego and USC, who works in the energy industry managing drilling projects.
Luke Delaney, 42, is a retired U.S Marine Corps major from Florida, with degrees in mechanical and aerospace engineering from University of North Florida and the Naval Postgraduate School. A test pilot, he worked for NASA’s Langley center supporting airborne science missions.
Andre Douglas, 35, is from Virginia and served in the U.S. Coast Guard, and most recently worked at Johns Hopkins University Applied Physics Lab on NASA missions.
Jack Hathaway, 39, is a U.S. Navy commander from Connecticut who holds degrees in physics and history form the U.S. Naval Academy and flew with Navy Strike Fighter Squadrons 14 and 136, with more than 2,500 flight hours in 30 aircraft types.
Anil Menon, 45, is a U.S. Air Force lieutenant colonel from Minnesota, who was the first SpaceX flight surgeon and has experience as an emergency medicine physician for crisis like the 2010 Haiti earthquake, 2011 Ren Air Show accident, and 2015 Nepal earthquake.
Christopher Williams, 38, is from Maryland and holds degrees in physics from Stanford and MIT. As a medical physicist, he’s helped research image guidance techniques for cancer treatments.
Jessica Wittner, 38, is a U.S. Navy commander from California with degrees in aerospace engineering from the University of Arizona and  the U.S. Naval Postgraduate School. She flew F/A-18 jets with Strike Fighter Squadrons 34 and 151, as well as worked as a test pilot.

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More from @thesheetztweetz

Apr 29, 2023
Elon Musk is holding a Twitter Spaces discussion on SpaceX's first Starship launch.

Thread: Image
Musk: "The outcome was roughly in what I expected, and maybe slightly exceeding my expectations, but roughly what I expected, which is that we would get clear of the pad."
Musk: "I'm glad to report that the pad damage is actually quite small" and should "be repaired quickly."
Read 36 tweets
Apr 29, 2023
After the dramatic first Starship Super Heavy launch, a look at SpaceX's monster rocket program – with the good (prototypes in the wings), the bad (destruction and debris at and around the launchpad) and the unknown (regulator investigations underway):
cnbc.com/2023/04/29/spa…
NASA chief @SenBillNelson: “I have asked, so I can report to you ... SpaceX is still saying that they think it will take at least two months to rebuild the launchpad and concurrently about two months to have their second vehicle ready to launch."
cnbc.com/2023/04/29/spa…
@SenBillNelson Nelson effectively defended SpaceX before a Congressional committee on Thursday, explaining how the company is "hardware rich:"

"They launch, if something goes wrong they figure out what it is, they go back and they launch it again."
cnbc.com/2023/04/29/spa…
Read 4 tweets
Apr 29, 2023
SpaceX is preparing to launch for the 29th time this year, and the second time this evening, with a Falcon Heavy rocket carrying satellites for Viasat and Astranis.

This rocket is expendable, so its boosters will not be recovered.

Watch live:
Falcon Heavy is standing tall to launch in a little over 10 minutes
Falcon Heavy launch holding at T-59 seconds
Read 4 tweets
Apr 28, 2023
SpaceX is about to launch for the 28th time this year, carrying a pair of satellites for @steviecSES' O3b mPOWER constellation.

This Falcon 9 booster is launching its second mission to date.

Watch live:
@steviecSES Liftoff for Falcon 9
@steviecSES Falcon 9's booster lands
Read 5 tweets
Mar 30, 2023
SpaceX is about to go for its 22nd launch of the year, carrying 10 satellites for the Space Development Agency’s Tranche 0 mission.

Watch live:
Abort called at T-3 seconds.
SpaceX launch director: Assessing the situation, Falcon 9 is healthy.
Read 5 tweets
Mar 15, 2023
The annual #SATShow rocket roundtable, moderated today by @Sandra_I_Erwin, with:

ULA CEO Tory Bruno
SpaceX VP of Commercial Sales Tom Ochinero
Arianespace CEO Stephane Israel
Rocket Lab $RKLB Senior Director Richard French
Blue Origin VP of Commercial Sales Ariane Cornell
@Sandra_I_Erwin @SATELLITEDC @ulalaunch @torybruno @RocketLab @blueorigin @arianecornell @arianespaceceo @Arianespace @SpaceX French: $RKLB spacecraft components and integrated satellite systems business combines with launch, "working to bring the lowest total cost ... back to customers."

"Really exciting to see our diversifying revenue and being able to stabilize the lumpiness of launch."
@Sandra_I_Erwin @SATELLITEDC @ulalaunch @torybruno @RocketLab @blueorigin @arianecornell @arianespaceceo @Arianespace @SpaceX *Bruno asks the crowd if they like the red paint job on Vulcan*

"Only one yes? That's it, sorry."
Read 26 tweets

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