Author | Lightnews

Historic Rad 39A/タンニャン

@historicrad39a.bsky.social

34 followers 67 following 280 posts

Howdy Y’all, I’m Rad. I like space, science, photography, writing, and many other things. Currently studying Japanese with a love of kanji. I like correcting misinformation for some reason. 今日は、タンニャンです。日本語を勉強しているアメリカ人です。どうぞよろしくお願い致します🙇‍♂️

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · 3d

Usually around 2 per day, but afaik there weren’t any probable re-entries in the area. They also burn up fairly completely, which for the purpose of not hitting things on the ground/in the air is a good thing, but may have other potential issues related to the atmosphere generally

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · 3d

No reported re-entries or fireballs in the area afaik, so it seems unlikely to be space-related

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · 3d

FWIW it seems more likely that it was something from a balloon at present, no reported re-entries or fireballs in the area. Starlink and space debris are still a problem, but they don’t appear to be the culprit in this case

Reposted by Historic Rad 39A/タンニャン

David Blanchflower BSc @davidbflower.bsky.social · 7d

Exactly 300 days until a big Partial Solar Eclipse over the UK. Totality over Iceland and part of Spain. 🔭 🧪

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Reposted by Historic Rad 39A/タンニャン

val - V.M. Ayala 🏳️‍🌈 @spacevalkyries.bsky.social · 8d

tragic: local author tries to generate some short story ideas and comes up with a novel-sized concept, now has a new novel WIP to add to the ever-expanding WIP pile.

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Reposted by Historic Rad 39A/タンニャン

Jonathan McDowell @planet4589.bsky.social · 9d

LAUNCH of Starship Flight 11 from Starbase pad OLP1 at 2323:42 UTC Oct 13

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · 9d

Interesting how they were able to restart it for landing burn, indicates to me that it was a non-destructive failure (sensor acting up or something?)

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Reposted by Historic Rad 39A/タンニャン

Jonathan McDowell @planet4589.bsky.social · 9d

SpaceX webcast data consistent with a Starship orbit of -1 x 192 km, with uncertainty of about plus or minus 3 km in the perigee value. The Raptor restart raised perigee to about +52 km (but the vehicle was by then already well past apogee, at 145 km on the way down.)

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · 29d

@adahop.com I’ve been rewatching BFFs lately and finally finished the 2042 episodes, but I had a question: were you involved in the production of those episodes? If so, in what ways?

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

Ah, fair enough lol

Reposted by Historic Rad 39A/タンニャン

Jonathan McDowell @planet4589.bsky.social · Aug 27

Attempt to fit the SpaceX webcast height-velocity data for flight 10 with a 192 km apogee and -15 km (green), 0 km (red), +14 km (blue) perigees. 0 looks like the best fit overall. I would say the perigee is somewhere in the -2 to +10 km range with moderate confidence.

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

No, the dumblinks were placed on a suborbital trajectory

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

NASA has had a hell of a lot more than 3 accidents. SpaceX is not just starship

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

Correct, which is why they didn’t pay for this launch. Assuming they are spy satellites that look suspiciously like mass simulators, pray tell what benefit the DoD gets from satellites placed on a +2 x 192km low inclination “orbit” that results in the payloads burning up 20 minutes later

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

Because they looked like mass simulators, and they were placed on a suborbital trajectory

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

They were mass simulators. They looked like mass simulators, and they were placed on a trajectory which resulted in them burning up about 20 minutes later

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

No. Dumblinks burnt up in the atmosphere around the same time as upper stage re-entry

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

According to the fact they look like mass simulators. And were put into an “orbit” that intersects the lower atmosphere

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

Nvm, I lied. Starship flight 10 is the 42nd consecutive success for SpaceX when you include the starship failures. If you exclude them and focus on consecutive successful Falcon flights, they’re up to 169 at this point

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

I don’t feel like counting all the consecutive launch successes since IFT-9, but it’s been a lot. Starship’s record isn’t great (but this also isn’t the first), but SpaceX’s is still very much the best of the best

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

Not in the traditional sense, no. They burnt up after being placed in a +2 x 192km “orbit” at the highest

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Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

Actually I think the highest perigee these things would have is estimated to be 2km or so. The prograde burn raised the perigee slightly, but that occurred after deployment

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

They are mass simulators. They were placed in a 192x~2km “orbit” and will have burnt up

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

I do hope those surveillance satellites enjoy being in a 192 by -15 to +14km “orbit”. They also look suspiciously like mass simulators than anything functional

Historic Rad 39A/タンニャン @historicrad39a.bsky.social · Aug 27

If 10-11 launches on time, I’m pretty sure it’ll be a 48 hour record for SpaceX. 4 flights in 24 hours is probably the most they can do, as it uses every pad