Historic Rad 39A/タンニャン
@historicrad39a.bsky.social
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🙇♂️
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🙇♂️
Reposted by Historic Rad 39A/タンニャン
Some tweets are pure fun. I grew up with Star Trek, so was thrilled to have William Shatner contact me while I was living on the International Space Station. We’ve since gotten to know each other - the first 2 Canadian spaceship captains :)
And since then, Bill flew in space!
And since then, Bill flew in space!
December 12, 2025 at 4:43 PM
Some tweets are pure fun. I grew up with Star Trek, so was thrilled to have William Shatner contact me while I was living on the International Space Station. We’ve since gotten to know each other - the first 2 Canadian spaceship captains :)
And since then, Bill flew in space!
And since then, Bill flew in space!
Reposted by Historic Rad 39A/タンニャン
Good-looking new-tech plane.
Hybrid-electric 50-100 seater, being built by Montreal's
@evioaircraft.bsky.social, 450 pre-orders.
Uses @prattandwhitney.bsky.social PT6's mated to electric motors for 200-500 nm routes. Fuel-efficient, multi-role game changer. First flight 2029.
shorturl.at/wT75Q
Hybrid-electric 50-100 seater, being built by Montreal's
@evioaircraft.bsky.social, 450 pre-orders.
Uses @prattandwhitney.bsky.social PT6's mated to electric motors for 200-500 nm routes. Fuel-efficient, multi-role game changer. First flight 2029.
shorturl.at/wT75Q
December 18, 2025 at 8:26 AM
Good-looking new-tech plane.
Hybrid-electric 50-100 seater, being built by Montreal's
@evioaircraft.bsky.social, 450 pre-orders.
Uses @prattandwhitney.bsky.social PT6's mated to electric motors for 200-500 nm routes. Fuel-efficient, multi-role game changer. First flight 2029.
shorturl.at/wT75Q
Hybrid-electric 50-100 seater, being built by Montreal's
@evioaircraft.bsky.social, 450 pre-orders.
Uses @prattandwhitney.bsky.social PT6's mated to electric motors for 200-500 nm routes. Fuel-efficient, multi-role game changer. First flight 2029.
shorturl.at/wT75Q
Reposted by Historic Rad 39A/タンニャン
Huge congratulations to Blue Origin and everyone involved on the successful launch and first-stage landing of the second New Glenn mission carrying NASA’s ESCAPADE twin spacecraft!
Reporting for Supercluster
Reporting for Supercluster
November 14, 2025 at 1:02 PM
Huge congratulations to Blue Origin and everyone involved on the successful launch and first-stage landing of the second New Glenn mission carrying NASA’s ESCAPADE twin spacecraft!
Reporting for Supercluster
Reporting for Supercluster
Reposted by Historic Rad 39A/タンニャン
A photo shared by Blue Origin CEO Dave Limp of New Glenn GS1 as it sails aboard Jacklynn back home to Capr Canaveral following uesterday's sucessful landing.
November 14, 2025 at 12:34 PM
A photo shared by Blue Origin CEO Dave Limp of New Glenn GS1 as it sails aboard Jacklynn back home to Capr Canaveral following uesterday's sucessful landing.
Reposted by Historic Rad 39A/タンニャン
Blue Origin's New Glenn rocket lifts off from Cape Canaveral in Florida, carrying NASA's ESCAPADE spacecraft, two probes on their way to Mars.
The rocket's first-stage booster, "Never Tell Me The Odds," successfully landed on Blue Origin's recovery barge, Jacklyn.
Reporting for Supercluster
The rocket's first-stage booster, "Never Tell Me The Odds," successfully landed on Blue Origin's recovery barge, Jacklyn.
Reporting for Supercluster
November 13, 2025 at 9:47 PM
Blue Origin's New Glenn rocket lifts off from Cape Canaveral in Florida, carrying NASA's ESCAPADE spacecraft, two probes on their way to Mars.
The rocket's first-stage booster, "Never Tell Me The Odds," successfully landed on Blue Origin's recovery barge, Jacklyn.
Reporting for Supercluster
The rocket's first-stage booster, "Never Tell Me The Odds," successfully landed on Blue Origin's recovery barge, Jacklyn.
Reporting for Supercluster
Reposted by Historic Rad 39A/タンニャン
NEVER
TELL
ME
THE
ODDS
TELL
ME
THE
ODDS
November 13, 2025 at 9:05 PM
NEVER
TELL
ME
THE
ODDS
TELL
ME
THE
ODDS
Reposted by Historic Rad 39A/タンニャン
Blue Origin's booster using pyrotechnics to secure itself to the deck after landing:
November 13, 2025 at 9:18 PM
Blue Origin's booster using pyrotechnics to secure itself to the deck after landing:
Reposted by Historic Rad 39A/タンニャン
my writing process
November 13, 2025 at 3:40 PM
my writing process
Reposted by Historic Rad 39A/タンニャン
The two ESCAPADE spacecraft have separated from the New Glenn following a successful launch. GS2 stage making a "CCAM" avoidance burn.
November 13, 2025 at 9:31 PM
The two ESCAPADE spacecraft have separated from the New Glenn following a successful launch. GS2 stage making a "CCAM" avoidance burn.
Reposted by Historic Rad 39A/タンニャン
Never tell me the odds? Nah. THE ODDS ARE 100 FUCKING PERCENT LETS FUCKING GO
November 13, 2025 at 9:14 PM
Never tell me the odds? Nah. THE ODDS ARE 100 FUCKING PERCENT LETS FUCKING GO
HOLY SHIT THEY DID IT
November 13, 2025 at 9:08 PM
HOLY SHIT THEY DID IT
Reposted by Historic Rad 39A/タンニャン
A 3-tonne Chinese rocket stage (CZ-3B Y67 stage 3, object 44867) launched in Dec 2019 and abandoned in orbit, made an uncontrolled reentry over eastern Florida at about 1120 UTC Nov 8 and was widely observed.
November 8, 2025 at 5:20 PM
A 3-tonne Chinese rocket stage (CZ-3B Y67 stage 3, object 44867) launched in Dec 2019 and abandoned in orbit, made an uncontrolled reentry over eastern Florida at about 1120 UTC Nov 8 and was widely observed.
Reposted by Historic Rad 39A/タンニャン
FAILURE of Gushenxing-1; 4th stage burn problem, just missed reaching orbit.
LAUNCH at 0403 UTC Nov 10 of a Gushenxing-1 from Jiuquan; at this time it is unclear whether or not the launch was successful.
November 10, 2025 at 1:35 PM
FAILURE of Gushenxing-1; 4th stage burn problem, just missed reaching orbit.
Reposted by Historic Rad 39A/タンニャン
I suspect that 2025 US6 is actually SSN 60058, the Chinese DRO-B lunar probe, in a 144000 x 382000 km x 28.2 deg orbit
Another mini-moon? Maybe. Newly discovered 2025 US6 is officially listed as an asteroid.
Unlike our quasi-moon 2025 PN7, this one is actually bound to Earth, for now.
Its orbit is pure chaos. Enjoy it while it lasts. It’ll probably be demoted to space junk.
Unlike our quasi-moon 2025 PN7, this one is actually bound to Earth, for now.
Its orbit is pure chaos. Enjoy it while it lasts. It’ll probably be demoted to space junk.
October 26, 2025 at 8:40 PM
I suspect that 2025 US6 is actually SSN 60058, the Chinese DRO-B lunar probe, in a 144000 x 382000 km x 28.2 deg orbit
Reposted by Historic Rad 39A/タンニャン
Exactly 300 days until a big Partial Solar Eclipse over the UK. Totality over Iceland and part of Spain. 🔭 🧪
October 16, 2025 at 4:24 PM
Exactly 300 days until a big Partial Solar Eclipse over the UK. Totality over Iceland and part of Spain. 🔭 🧪
Reposted by Historic Rad 39A/タンニャン
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.
October 15, 2025 at 1:50 PM
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.
Reposted by Historic Rad 39A/タンニャン
LAUNCH of Starship Flight 11 from Starbase pad OLP1 at 2323:42 UTC Oct 13
October 13, 2025 at 11:24 PM
LAUNCH of Starship Flight 11 from Starbase pad OLP1 at 2323:42 UTC Oct 13
Reposted by Historic Rad 39A/タンニャン
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.)
October 14, 2025 at 2:02 AM
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.)
@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?
September 24, 2025 at 12:02 PM
@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?
Reposted by Historic Rad 39A/タンニャン
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.
August 27, 2025 at 3:26 AM
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.
Reposted by Historic Rad 39A/タンニャン
Ship 37 successful landing burn, gentle splash in Indian Ocean.
Blew up after falling over in water, as expected.
Blew up after falling over in water, as expected.
August 27, 2025 at 12:37 AM
Ship 37 successful landing burn, gentle splash in Indian Ocean.
Blew up after falling over in water, as expected.
Blew up after falling over in water, as expected.
Reposted by Historic Rad 39A/タンニャン
Booster sep and boostback burn. Looks like 1 booster engine did not work on ascent. All Ship engines firing.
Unfortunately they're not giving Ship altitude values, boo
Unfortunately they're not giving Ship altitude values, boo
August 26, 2025 at 11:34 PM
Booster sep and boostback burn. Looks like 1 booster engine did not work on ascent. All Ship engines firing.
Unfortunately they're not giving Ship altitude values, boo
Unfortunately they're not giving Ship altitude values, boo
37 finally does what all the other V2s failed to do, well done. Thank goodness for the (near) flawless flight. Let’s hope V3 doesn’t inherit V2’s… *troubled* career
August 27, 2025 at 1:27 AM
37 finally does what all the other V2s failed to do, well done. Thank goodness for the (near) flawless flight. Let’s hope V3 doesn’t inherit V2’s… *troubled* career
Reposted by Historic Rad 39A/タンニャン
Successful flight 10 of Starship; 8 dummy Starlinks deployed, in-space Raptor restart, reentry and soft landing in Indian Ocean. Partial structural failure of aft skirt at T+47m, some minor flap damage, but overall a good flight putting the program back on track.
August 27, 2025 at 12:40 AM
Successful flight 10 of Starship; 8 dummy Starlinks deployed, in-space Raptor restart, reentry and soft landing in Indian Ocean. Partial structural failure of aft skirt at T+47m, some minor flap damage, but overall a good flight putting the program back on track.
@planet4589.bsky.social do you happen to know roughly what % of space debris that is intentionally deorbited re-enters in close proximity to Point Nemo? I’m fairly certain most disposals occur over the South Pacific, but I’m less certain on how many target within ~2,000km of the point
August 7, 2025 at 7:32 PM
@planet4589.bsky.social do you happen to know roughly what % of space debris that is intentionally deorbited re-enters in close proximity to Point Nemo? I’m fairly certain most disposals occur over the South Pacific, but I’m less certain on how many target within ~2,000km of the point