@TheInfographicsShow

Astronauts can grow up to 2 inches (5 cm) taller while in space! Without Earth's gravity compressing their spine, the vertebrae expand, making them temporarily taller. What's a crazy fact about space you've heard of?

@rogm8577

They will return to Earth only to be faced with thousands of people mocking and denying that they ever went.

@erichkitzmueller

No word about cosmic radiation?  One of the biggest challenges of manned spaceflight outside earth's protective magnetic field. Another problem is overheating. It's actually harder than you might expect to get rid of excess heat in the vacuum of space.

@richardthomas5362

I think it is funny that they keep showing starship flying to and from Mars with the booster attached.

@Gruxxan

The first Mars starship missions won’t carry crew, they will carry equipment and supplies, ready for the first crewed missions.

@nAme-bf9uz

Star ship is like 100x too smal for spin gravity

@kevinhammer4370

“Starship 101” but doesn’t even know the booster doesn’t go to mars with the ship

@frankmacskasy881

Solar radiation? Cosmic rays? These two factorsare probably the worst dangers out of everything else.

@BosleyBeats

Pioneering is not for the weak of heart and mind.

@garyoldman9172

There will never be more people in Mars than we have today in Antarctica

@patrickhewitt7899

Astronaut screams, "Oh God, no, Elon used cybertruck glue to put the ship together we're going to die."

@STSWB5SG1FAN

Using the Star-ship to leave Earth's orbit isn't really the best use of the spacecraft. It's best used as a heavy lift vehicle to place very large very heavy payloads into Earth orbit, we could use it to place the parts of an interplanetary spacecraft into orbit where they can be assembled into a larger spaceship.

@TheVFXbyArt

Most of this would be tough to do in Antarctica, let alone mars!

@ernstjacques2056

Im sure the first few trips will be one way tickets 😂

@AJeziorski1967

OK, it's been a while since I've done a calculation like this, but let's figure out how fast Starship would have to be rotating to simulate Earth-like gravity. At its widest, the ship is 9 meters across (30ft, for our American friends), which means that the astronauts are never further than 4.5m from the axis of rotation, which isn't great. Because gravity at the axis will always be zero, and centrifugal force increases the further away you are from the center of rotation. But let's assume the astronauts are right at the edge of the ship. That means that to generate 9.81 meters per second-squared of radial acceleration (normal gravity), it would have to be rotating at 1.48 radians per second, which works out as roughly one complete rotation every four seconds, or 15-ish revolutions per minute. Fancy being trapped on that ride for nine months? Gets even more complicated when you consider that if an astronaut is 1.8m tall, then if they stand up their head will be experiencing substantially less "gravity" than their feet (just under 2/3 of a G). Starship is not designed to generate artificial gravity. Its entire layout is absurdly unsuitable for journeys to Mars.

@owenlouisdavid

This is video is like that Weinersmiths book - "it's difficult, it's dangerous, it's impossible, well maybe not, we might be able to do it, OK we could, but maybe not now".

@FadedW10

I'm sure the infographics show knows more than the scientists that work for a space agency.

@paradoxofepicurus

11:57 "There are several critical failure points." (Camera zooms in on Elon)

@michaelarbach

This will not age well.

@JakeRoark-s3d

Mars and man doesn’t seem anytime soon for all the challenges involved