Space space

Letter received by my Grandmother when my grandfather passed during the heyday of the Apollo program. He was a civil engineer who put his whole life into this program. Signed by Wernher von Braun himself.

Letter received by my Grandmother when my grandfather passed during the heyday of the Apollo program. He was a civil engineer who put his whole life into this program. Signed by Wernher von Braun himself.

So close to seeing a man on the moon too. Do you know if he died confident that the program would be successful or was it still an uncertainty at that stage?

That really is a gem right there.

RIP to your grandfather.

Werner Von Braun was a.... interesting guy... yeah we'll just leave it at that for now.

If Von Braun wrote it himself it could well be a spelling error. Considering that his native language was German.

Rocket fuel inventor dies aged 107

Rocket fuel inventor dies aged 107
Rocket fuel inventor dies aged 107

For the record, there's no info stating he directly invented hydrogen rocket fuel. Instead he wrote the book detailing every type of rocket fuel there is, which is apparently still used today. Here's a Short Biography and an Interview.

What a great man

What a great rocket man.

He invented the formula for hydrogen based rocket fuel?

They mean H2?

ELon Musk on Twitter: This rocket was meant to test very high retrothrust landing in water so it didn’t hurt the droneship, but amazingly it has survived. We will try to tow it back to shore.

ELon Musk on Twitter: This rocket was meant to test very high retrothrust landing in water so it ...

SpaceX can't even get rid of boosters if they try!

Wow! What a twist! But seriously, I want to know how they managed this, since IIRC all other water landings cause the booster to break up once it tipped over.

Despite insistence, science remains a consequence of "Oh shit, that worked?"

“Remember kid the only difference between screwing around and science is writing it down.”

Adam Savage of the mythbusters.

If the Moon were at the same distance as the ISS

The tidal forces would be crazy! I would imagine tectonic activity would be huge, the atmosphere would be ripped from Earth among other things. Really well made gif though, visually it looks great.

That would be amazing and scary at the same time.

That is legitimately terrifying and spectacular.

The moon would also be ripped apart by the pull of the earth, there was a name for this, but I can’t recall it.

If a giant mirror was the same distance from the Earth as the ISS

I imagine this as a parabolic mirror, absolutely roasting a line across the surface.

how many kickstaters do we need to make this a reality?

Oh man, I'm not gonna get tired of all these "If ___ was the same distance from the Earth as the ISS" videos. Really cool!

just tell Elon Musk, he will take care of it.

Willamette is the largest meteorite found in the US, at 15.5 tonnes, and is a peculiarly pitted lump composed of 91% iron and 7.62% nickel, with no impact crater preserved at its original site in Oregon... Willamette in 1910

Willamette is the largest meteorite found in the US, at 15.5 tonnes, and is a peculiarly pitted lump composed of 91% iron and 7.62% nickel, with no impact crater preserved at its original site in Oregon... Willamette in 1910

The meteorite presumably landed on an ice cap in what is now Montana or western Canada, and was transported as a glacial erratic (dragged by the glacier ice) to the vicinity of an ice barrier that formed across the Clark Fork River.

Subsequent weathering.... In the case of weathering, rainwater interacted with the mineral troilite, resulting in a form of sulfuric acid which slowly dissolved portions of the meteorite. This resulted (over a very long period) in many of the pits that are visible today.

So the question arises as to what was in place of those pits? Alien biology we now call earthly? Ice that melted off into the atmosphere? Level 999 bubonic plague??

*during the Missoula Floods which carried numerous glacial erratics across the badlands of eastern Washington before coming to rest in the willamette valley in western Oregon.

Unless you are referring to some other form of prior glaciation...

How the Falcon Heavy stacks up against The Rockets of the World

How the Falcon Heavy stacks up against The Rockets of the World

Delta IV Heavy is fueled by liquid hydrogen, which has a very low density. So the rocket is big but light.

Delta IV Heavy weighs 733 metric tons before liftoff, while Falcon Heavy will weigh 1,421 metric tons. So the Delta is actually a little more efficient by mass.

Damn, the only successful vehicle with a bigger payload is the Saturn V.

Especially if you like explosions

delta iv heavy is huge in comparison and can only carry half the payload. why is that?

The liftoff of Apollo 15 from the surface of the moon

I have never seen this before - it's incredible. It looks...different that what I expected. I guess I never thought about the logistics of launching off an object without Earth's gravity. It looks more like a grasshopper jumping than a rocket launch.

Make's sense when your talking about a body with less than 17% of Earth's gravity (1.62m/s2 ). That's easy peezy.

Hubble Captures Vivid Auroras in Jupiter’s Atmosphere [1600x1595]

Hubble Captures Vivid Auroras in Jupiter’s Atmosphere [1600x1595]

It looks like Jupiter is about to be teleported into an 80s cartoon where it will have to go on an adventure to learn the true meaning of friendship.

Here

Keep in mind, this is a composite image, and not representative of what it actually looks like. It is an ultraviolet image of the Auroras overlaid onto a true-color image of Jupiter.

is a quick ultraviolet time lapse of what the auroras look like.

Kinda reminds me of a certain thing in "The Expanse".

Kinda looks like the covenant have just started glassing jupiter.

Simulation of our closest Supermassive Black Hole, Sagittarius A*.

Idk why but space things sorta choke me up, it's like there's so much awesome stuff we could be exploring and looking at and we decide our time is better spent hurting each other

The Event Horizon Telescope is trying to take the first real images of this monster.

They are expecting to get an image closer to this.

Deeply unnerving. Most representations are uncanny but something about this one is a bit terrifying. Then again, I guess where all mass goes to die should inspire a bit of fear

Try one of these subthreads