Space Discussion Thread

[RedCowboy]

From what I read you can store compressed hydrogen ( gas state ) in high pressure vessels just like other gasses up to 5000-10,000 psi but liquid hydrogen will boil off at normal atmospheric pressure, unless stored at or below 20.28K, −252.87 °C, −423.17 °F so I expect it goes into the rocket tanks very cold and it's well insulated, but I'm sure they pump it out until the next launch date in the case of a scrubbed launch.......Unless they have an external chilling loop, I can't find any details on that. However if they have a leak then pumping it out sounds right.

Edit: Here's something > https://www.sciencedirect.com/topics/engineering/liquid-hydrogen

 

[Ears and Eggs]

NASA’s Webb Takes Its First-Ever Direct Image of Distant World – James Webb Space Telescope

blogs.nasa.gov

 

[Ears and Eggs]

Can't wait until they can finally bring some of these samples back and analyze them more closely.

'Tantalizing' Mars rock samples collected by Perserverance rover

The presence of organic molecules does not necessarily mean there was once life on the Red Planet, but scientists are eager to figure out how to get them back to Earth for analysis.

www.nbcnews.com

 

[RedCowboy]

NASA's Artemis I launch delayed again because of tropical forecast

NASA has scrubbed Tuesday’s launch of the Artemis I moon rocket as Florida prepares for a potentially major hurricane.

www.fox6now.com

 

[Ears and Eggs]

Looks like they'll start to roll it back to the assembly building tonight to ride out the storm. No new launch date set as of now.

Artemis 1 will roll off launch pad to ride out Hurricane Ian

This will be the rocket's third visit to NASA's Vehicle Assembly Building.

www.space.com

 

[Ears and Eggs]

Live stream of the DART mission and the impact with asteroid Dimorphos scheduled for tonight.

 

[RedCowboy]

 

[Ears and Eggs]

Here's hoping for a successful launch tomorrow!

https://twitter.com/x/status/1647629006089461761

 

[WizardG]

Whether it goes up or goes bang, gonna be spectacular either way. If it works it's gonna cut the cost per kg to orbit by a factor of 10 or more. Revolutionary stuph.

 

[Ears and Eggs]

Darn, it blew up a few minutes into the flight. Hope they got some good data from the booster though. Looks like it malfunctioned as they were trying to separate from the booster stage.

SpaceX’s gigantic Starship rocket blasts off and then explodes in its first test flight

The rocket — the most powerful ever developed — is set to play a key role in NASA’s Artemis program, which plans to put humans on the moon in 2025.

www.nbcnews.com

 

[RedCowboy]

 

[gazer101]

Sadly the above said "fission" which means that no space agency will authorize near-earth use of the engine... it can still be useful for deep-space transfer burns but we really need fusion engines that don't leave a radioactive wake

 

[RedCowboy]

Sure fusion would be nice, but if a fission engine is available in 4 years and fusion is still decades away then I'm all for fission for the trips to Mars, the difference between 45 days and 7 months will be a game changing advancement, doesn't matter if they burn hydrogen, kerosene or hippy farts to get off the Earth.

 

[Externet]

A few pages of a report for your own evaluation... If you want the rest, and is allowed to post, let me know. Please delete post if improper.

 

[ixfd64]

Euclid Space Telescope Snaps Spectacular First Images

The European Space Agency's ambitious Euclid space telescope is on its way to decoding the secrets of dark matter and dark energy

scientificamerican.com

 

[RedCowboy]