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Old 06-01-2014, 09:40 AM  
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Space Exploration megathread
Since a number of cool things are happening in space exploration these days, we'll widen the scope of this thread a smidge. Conversation about all things space exploration are welcome, whether it be from NASA, SpaceX, ULA, Blue Origin, or anyone else. Chances are most of the discussion will still be about SpaceX since they love to make things public and fun, but nothing's off limits. I'll eventually get around to modifying the OP to include resources for other companies too, but in the meantime, feel free to post any cool stuff you run across.

Lists of Upcoming Missions



How to Watch a Live Launch


Where to Learn More
Spoiler!


Glossary
Spoiler!
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Old 11-09-2021, 10:26 PM   #4711
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Surprisingly, this is actually real. It's known as the Rosette Nebula (Caldwell 49) is about 5,000 light-years distance from Earth, 130 light-years wide, & has a mass ~10,000 × the Sun
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Old 11-10-2021, 03:11 PM   #4712
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Old 11-10-2021, 07:52 PM   #4713
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Old 11-15-2021, 05:58 PM   #4714
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Sometimes I think Russia's space program is run by a bunch of half-trained chimpanzees.
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Old 11-15-2021, 06:07 PM   #4715
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It is, but my understanding is that this was the Russian military and not Roscosmos. Would not surprise me if Roscosmos learned of it the same time NASA did.
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Old 11-16-2021, 11:37 AM   #4716
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Old 11-20-2021, 02:36 AM   #4717
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Astra made it to orbit!

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Old 11-23-2021, 10:51 PM   #4718
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I read about this the other day and thought it was interesting.

https://www.cnbc.com/2021/11/09/spin...ve-rocket.html

It essentially puts a payload in an enormous vertical centrifuge, spins it to hypersonic speeds, and then throws it up into space. I'm curious how something like a satellite could hold up to those forces, and I'd think that's a hard sell. But if you want to move a bunch of steel or uranium into orbit, this seems like a good way to do it.

You really want to be sure this baby releases on the vertical part of the spin cycle, though, or you're going to rip a big swath through Albuquerque.
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Old 11-24-2021, 07:17 AM   #4719
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I read about this the other day and thought it was interesting.

https://www.cnbc.com/2021/11/09/spin...ve-rocket.html

It essentially puts a payload in an enormous vertical centrifuge, spins it to hypersonic speeds, and then throws it up into space. I'm curious how something like a satellite could hold up to those forces, and I'd think that's a hard sell. But if you want to move a bunch of steel or uranium into orbit, this seems like a good way to do it.

You really want to be sure this baby releases on the vertical part of the spin cycle, though, or you're going to rip a big swath through Albuquerque.
Yeah, the accuracy requirements for angle of release must be insane. I pretty much dismissed this tech due to that, the satellite hardening required to survive the stresses, and the price of launch continuing to drop as SpaceX, Rocket Lab, Astra, and others push for more/cheaper launches, The idea of launching raw materials (like a chunk of steel for in-orbit manufacturing) seems like a good use case though. I'm curious to know how fast the projectile is moving as it leaves the centrifuge and if it's fast enough to have to deal with the heat from friction that things entering the atmosphere deal with.
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Old 11-24-2021, 10:27 AM   #4720
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Yeah, the accuracy requirements for angle of release must be insane. I pretty much dismissed this tech due to that, the satellite hardening required to survive the stresses, and the price of launch continuing to drop as SpaceX, Rocket Lab, Astra, and others push for more/cheaper launches, The idea of launching raw materials (like a chunk of steel for in-orbit manufacturing) seems like a good use case though. I'm curious to know how fast the projectile is moving as it leaves the centrifuge and if it's fast enough to have to deal with the heat from friction that things entering the atmosphere deal with.
So the first few tests might go like this?



Or this?



Or this?

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Old 11-30-2021, 10:18 AM   #4721
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Elon Musk tells SpaceX employees that Starship engine crisis is creating a ‘risk of bankruptcy’

https://www.cnbc.com/2021/11/30/elon...ankruptcy.html

Musk being Musk?
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Old 11-30-2021, 10:24 AM   #4722
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Elon Musk tells SpaceX employees that Starship engine crisis is creating a ‘risk of bankruptcy’

https://www.cnbc.com/2021/11/30/elon...ankruptcy.html

Musk being Musk?
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Old 11-30-2021, 12:12 PM   #4723
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Musk being Musk?
Probably. He likes to be a bit dramatic in order to motivate his employees. Still not a great sign that they're having production issues with Raptor, but hopefully they'll get it worked out.
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Old 11-30-2021, 12:13 PM   #4724
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It's hard to believe, but there's actually a good chance that JWST gets off the ground in a few weeks. Definitely one of the highest-impact (and highest-risk) missions we've seen in a while.
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Old 11-30-2021, 01:18 PM   #4725
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It's hard to believe, but there's actually a good chance that JWST gets off the ground in a few weeks. Definitely one of the highest-impact (and highest-risk) missions we've seen in a while.
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This process will involve nearly 350 single-point failures, and if something goes wrong, it would scuttle the deployment without hope of repair.

https://arstechnica.com/science/2021...cember-launch/
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