HackerTrans
トップ新着トレンドコメント過去質問紹介求人

trothamel

4,130 カルマ登録 15 年前

投稿

What to expect from the fiery, 14-minute return of Artemis II

arstechnica.com
2 ポイント·投稿者 trothamel·3 か月前·0 コメント

Earthset (Artemis II)

images.nasa.gov
4 ポイント·投稿者 trothamel·3 か月前·1 コメント

Watch Artemis II's Closest Approach to the Moon [video]

youtube.com
2 ポイント·投稿者 trothamel·3 か月前·0 コメント

My third Orion launch, but it feels different

arstechnica.com
1 ポイント·投稿者 trothamel·3 か月前·0 コメント

Ignition: NASA's Plan for the Moon [video]

youtube.com
1 ポイント·投稿者 trothamel·4 か月前·1 コメント

Cooling Datacenters in Space – Doing the Math

patreon.com
1 ポイント·投稿者 trothamel·4 か月前·0 コメント

Discord Posts "Age Assurance" FAQ

twitter.com
2 ポイント·投稿者 trothamel·5 か月前·0 コメント

NASA to Save $1.4B by Insourcing

twitter.com
2 ポイント·投稿者 trothamel·5 か月前·0 コメント

The Spacecraft That Wouldn't Die

corememory.com
50 ポイント·投稿者 trothamel·5 か月前·11 コメント

NASA is kind of a mess: Here are the top priorities for a new administrator

arstechnica.com
4 ポイント·投稿者 trothamel·8 か月前·0 コメント

4chan fined $26K for refusing to assess risks under UK Online Safety Act

arstechnica.com
5 ポイント·投稿者 trothamel·9 か月前·1 コメント

Trump Card – Pathway to American Citizenship

trumpcard.gov
16 ポイント·投稿者 trothamel·10 か月前·3 コメント

コメント

trothamel
·3 日前·議論
https://x.com/SawyerMerritt/status/2064108916611420273?lang=...

While I'd suspect the design is still in flux, the current design is for a 120kw satellite with 110 square meters of radiators. Scaling to hundreds of gigawatts is intended to be by repeatedly launching smaller designs.
trothamel
·21 日前·議論
Offhand, do you know what format that data is in? Is it a question and then a human answering that question? Mostly just curious at to what the training data consists of.
trothamel
·先月·議論
I suspect that this is the start of a play for SpaceX's orbital datacenter project - if they're really planning on launching as many satellites as they've said (and Starship is going to massively lower the cost of launch), they won't be able to fill them with Grok. So perhaps it's best to become the infrastructure provider to the other AI Labs.
trothamel
·2 か月前·議論
After the accident, Apollo 13 had 4 burns.

The DPS-1 burn which restored the free return trajectory was done using the Apollo guidance computer.

The PC+2 burn which sped up the return from earth was done using the Apollo guidance computer.

The MCC-5 mid-course correction burn was done by hand.

The MCC-7 mid-course correction burn was done by hand, but used the Apollo guidance computer to integrate the accelerometer to let everyone know when the burn was done.

(All the burns on Apollo 8 were computer controlled. I'd assume Gemini 7 and 12 were hand flown, though I don't know for sure.)
trothamel
·2 か月前·議論
So, that's generally not something local governments do in the US. They do things like increasing taxes on data centers, denying water rights, electric interconnection rights, etc. (At least, all of this has been threatened against data centers.)
trothamel
·2 か月前·議論
SpaceX's launch capacity is an order of magnitude larger that all four of those put together.
trothamel
·2 か月前·議論
It's putting AI processing out of the reach of hostile local, state, and international governments. Does it need to be a cover?
trothamel
·3 か月前·議論
This is a really good point, especially since a similar plan was attempted once before and failed.
trothamel
·3 か月前·議論
That was a great article.

Adding to it - Apollo 13 was a mission where 3 men should have died, but somehow didn't. If it had happened while the LM was on the moon, you would have had the CSM lose power, and then two men on the moon would have had no way to return home.

(And for the shuttle design mission - my understanding is it was likely the ability to do a HEXAGON-style film return mission in a single orbit, before the Soviets knew what was happeneing.)
trothamel
·3 か月前·議論
This is about to change.

New NASA administrator Isaacman has redone the Artemis program. The changes were announced at the Ignition event a few weeks ago:

https://www.nasa.gov/ignition/

If you read one thing, read the sides on building the moon base:

https://www.nasa.gov/wp-content/uploads/2026/03/2-building-t...

The goals it to fly often - adding a SLS launch to 2027 and a second launch to 2028. This drops the cost-per-launch, which is mostly fixed. It redoes SLS to make it less expensive and more capable. It moves the lunar space station down to the surface of the moon.

And it's budgeted at $10B/3 years, which fits into NASA's budget.

Isaacman took the Artemis program and fixed it. The reckoning came, and it's looking good.
trothamel
·3 か月前·議論
Also Artemis II in eclipse.

https://images.nasa.gov/details/art002e009301
trothamel
·3 か月前·議論
They just set the record for being farther away from Earth than anyone else.

The commander just named a feature on the moon for his late wife.
trothamel
·3 か月前·議論
We're about to find out.

The new NASA administrator, Isaacman, seems to have done a very good job of convincing the various Senators to, if not get rid of the pork, allow him to allocate it in a way that benefits the lunar program.

The result was the Ignition event, which looks like it's planning to send up 17 small and 4 crew-capable landers by 2028, along with a fleet of orbital assets.

You can find out more https://www.nasa.gov/ignition/ , especially the "Building the Moon Base" section. The cost is $10B spread out over 3 years.
trothamel
·3 か月前·議論
Successful space travel is one of the few big news events where nobody has to be unhappy.

Most of the other big news events are ones where people get severely hurt, and political ones where one partly loses.

With this, we can look up at the moon, and say "Humanity did that."
trothamel
·3 か月前·議論
This is a perfect way to put it.

Artemis II is not safe, at least by the standards we apply to things. It's the third flight of a capsule, on the second flight of the rocket, and the first flight of things like the life support system.

At the end of the day, one of the reasons astronauts are respected is they understand those risks, and go into space anyway. That doesn't mean we shouldn't try to minimize risks - but at some point the risk becomes acceptable, and the cost of reducing it too great.

To paraphrase a quote from Star Trek - risk is their business.
trothamel
·4 か月前·議論
Text version of the introduction: https://xcancel.com/NASAAdmin/status/2036428252693078055
trothamel
·4 か月前·議論
There's a version of this built into the Google Fit application for Android.
trothamel
·4 か月前·議論
A couple of new posts by Nasa Administrator Isaacman:

Launch cadence across NASA programs:

https://x.com/NASAAdmin/status/2027456699175497741

An infographic showing the new architectures:

https://x.com/NASAAdmin/status/2027456713507356713

It's interesting how Artemis III (the new one) will try to prove out both HLS landers in one LEO mission.
trothamel
·5 か月前·議論
Interest also compensates for the other things that money could be doing. If I didn't loan it to you (or a student), then I would be doing something else with the money, even if just buying a government bond.
trothamel
·5 か月前·議論
Don't forget polaroid in that.