Usa Man

451 posts

Usa Man

Usa Man

@UsaMan637

Physicist.

Katılım Kasım 2021
349 Takip Edilen42 Takipçiler
Johnny Cadillac
Johnny Cadillac@lippyent·
What was your Favorite Radio Station in High school? Hmm 😒 🤔?¿
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Alex Boge
Alex Boge@alexboge·
With almost no fanfare, Artemis II has already passed straight through what moon landing deniers love to call the “deadly, impenetrable” Van Allen radiation belts. Except… they aren’t. They’re regions of trapped charged particles - mapped, measured, and understood for decades. Even Dr. James Van Allen himself noted that with proper trajectory and shielding, passing through them is not a problem. Mission planners minimize exposure by carefully selecting the flight path and limiting time in the most intense regions. Spacecraft are shielded. Radiation dose is tracked and kept within safe limits. This isn’t a mystery to us, it’s just physics and engineering. We’ve done it before. We just did it again.
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Usa Man
Usa Man@UsaMan637·
@AJamesMcCarthy @PaladinRood If you look at Apollo launch curves, at orbit insertion the spacecraft was even pointed slightly "down."
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Andrew McCarthy
Andrew McCarthy@AJamesMcCarthy·
You'd think so, but nope! Going straight up will get you to space, but you'd fall right back down the moment you cut off your engines. The way to get into "orbit" (which is how you stay in space and experience zero G without burning fuel) is by moving sideways fast enough that your sideways motion creates a ballistic arc that keeps your altitude above Earth. They're still in freefall, but moving so fast they "miss" the planet. From orbit, they can then burn the engines at the right time to break out of orbit and fall towards the moon once they get close enough, with precise heading that allows them to "miss" it and fall back down to the planet in what's known as a free return trajectory. That's how this works in a nutshell, but orbital mechanics are tough to wrap your head around so I'd strongly suggest spending some more time reading about it!
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Paladin 🎖
Paladin 🎖@PaladinRood·
O foguete da missão Artemis II não deveria ir reto para cima? Em vez disso, assume uma trajetória perpendicular à superfície da Terra? 🤔
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The Babylon Bee
The Babylon Bee@TheBabylonBee·
In Compelling Argument For Birthright Citizenship, Justice Jackson Eats Entire Stick Of Glue buff.ly/3eBQTiD
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Marcus Aurelius
Marcus Aurelius@PoopRebuke·
@glennbeck @RTB_HRoss Nonsense. They never landed on the moon. They didn’t have the battery technology, they didn’t have the oxygen generating technology, they didn’t have the technology to land the lunar module. We didn’t have the communication capabilities.
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Glenn Beck
Glenn Beck@glennbeck·
Today, as NASA prepares for its Artemis II mission, claims that we never went to the moon are everywhere. So, I asked astrophysicist @RTB_HRoss if there's any proof that we did go: “There’s now three laser reflectors on the moon. Physicists beam laser beams off them every single day. Because of those laser reflectors that the Apollo astronauts put on the moon, we’re able to test theories of gravity to a degree that we’ve never been able to do before. So somebody put those laser reflectors there.”
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n0tf0rpr0fit
n0tf0rpr0fit@n0tf0rpr0fit1·
@glennbeck @RTB_HRoss Louis D. Smullin was the first to bounce a laser beam off the moon using a telescope at Lincoln Laboratory in 1962.
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The Extreme Music Enthusiast
The Extreme Music Enthusiast@TheExtremeMusi1·
Which band do YOU prefer to see live? 👇🏻 - Led Zeppelin - Metallica - The Beatles - The Who
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Lina
Lina@Lina_rays1ya·
Biden didn’t destroy the Rose Garden. He rebuilt the economy, created over 15 million jobs, cut the deficit, lowered insulin costs, and passed historic climate & infrastructure bills. His conscience is clear and so is his record. Do you agree with me? Yes Or No !!
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Usa Man
Usa Man@UsaMan637·
@GovernorVA I would move back to VA if it weren't for you.
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Governor Abigail Spanberger
Many of the bills I’ve signed into law were part of my Affordable Virginia Agenda — my priority proposals to contend with high costs. Much more to come. We’re just getting started.
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Chad
Chad@braves2430·
What's that place for You? 🙃
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𝐌𝐚𝐭𝐭 𝐏𝐢𝐧𝐧𝐞𝐫
Who’s the most famous person you’ve ever spoken to? Not “seen from far away” — actually talked to, even for a minute. A quick hello, a handshake, a normal conversation… and you still remember it. Who was it?
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Usa Man
Usa Man@UsaMan637·
@barrylongii Hoosiers. It reminds me of my high school days.
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BARRYLONGLiiVE
BARRYLONGLiiVE@barrylongii·
What’s your favorite sports movie of all time? A) Rocky B) Remember the Titans C) Coach Carter D) Space Jam E) The Blind Side F) Hoosiers G) Creed H) Friday Night Lights I) Million Dollar Baby J) The Sandlot K) Dodgeball: A True Underdog Story L) Comment another sports movie ✍️
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Myrna 𝕏
Myrna 𝕏@GigaBeers·
Jason Aldean walked off the set of Late Night with Stephen Colbert before playing a single note after the "comedian" tried to humiliate him in front of the audience. "Colbert was introducing him," said Aldean's manager, Ben Jarroo, "Then he made a crass, unnecessary statement about 'forgiving him' for supporting President Trump. Jason wasn't having it." When Colbert said his name and motioned for the curtain, there was nobody there. Aldean and his band had walked off, and they won't be coming back. h/t: Marcia G Jones That's how these leftists need to be treated.
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Usa Man
Usa Man@UsaMan637·
@BarackObama Vote NO! B.O. would have you throw away half the state.
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Barack Obama
Barack Obama@BarackObama·
Virginia: early voting for the redistricting amendment is happening now through April 18. Protect your voting power and help level the playing field ahead of the midterm elections by voting YES today or on Election Day, April 21. Go to IWillVote.com/VA for more information on how to cast your ballot.
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Jim
Jim@JVMonte2·
Band on the Run (1973) or Rumours (1977)?
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Retro Coast
Retro Coast@RetroCoast·
Remember green bar computer paper? #1980s
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Usa Man
Usa Man@UsaMan637·
@GovernorVA If you vote YES you will likely lose your representation in half the state.
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Governor Abigail Spanberger
Governor Abigail Spanberger@GovernorVA·
Important note for young Virginians — 🗳️ If you will be 18 years old by Election Day on November 3, you can vote in Virginia’s redistricting referendum! Register at vote.elections.virginia.gov and vote YES by April 21.
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