🥚

SpaceX watcher in Japan

[宇宙システム研究室＠東京都立大学/佐原研究室 @TMU_SSL]

直径6.4kmのスペースコロニーは，113.5秒に1回回転し，U(r)=-(1/2)r^2ω^2の遠心力ポテンシャルを生み出している．ポテンシャルの基準は無限遠じゃなく，コロニーの回転中心にあるんだ．コロニー生まれの私たちはホンモノの重力ポテンシャルU(r)=-μ/rも，ホンモノの慣性系も知らない．
#TMU_SSL

[Starship Gazer @StarshipGazer]

Starbase launch tower 2 module 3 was stacked this morning.

7/18/24

[SpaceX @SpaceX]

Each pass through perigee removes 5+ km of altitude from the highest point in the satellite orbit. At this level of drag, our maximum available thrust is unlikely to be enough to successfully raise the satellites.

[SpaceX @SpaceX]

The team made contact with 10 of the satellites and attempted to have them raise orbit using their ion thrusters, but they are in an enormously high-drag environment with their perigee, or lowest point of their elliptical orbit, only 135 km above the Earth

[SpaceX @SpaceX]

During tonight’s Falcon 9 launch of Starlink, the second stage engine did not complete its second burn. As a result, the Starlink satellites were deployed into a lower than intended orbit.

SpaceX has made contact with 5 of the satellites so far and is attempting to have them raise orbit using their ion thrusters.

[thgrace @thgrace]

ようやくこのイラストが使えるように(うるうる
Ariane6 ガントリはなかなか興味深いです

[Michael Sheetz @thesheetztweetz]

The French air force just dropped the hardest Ariane 6 launch photo and it’s not close

[Trude⚙😈 @Gertrud_Violett]

若造なのでアポロの月面着陸はリアタイできなかったけど
人類史上最大最強の人工物の軌道投入と大気圏再突入がリアタイできたからﾖｼｯ！とします！
お疲れ様でした。

[NSF - NASASpaceflight.com @NASASpaceflight]

Ship 29 makes it through re-entry, minus part of a flap, and does a bellyflop!

And...............no way! It looked like a flip and burn and soft splashdown?!

[LH2 @LH2NHI]

ウッソ溶けてバラバラになりながらランディングバーンまで行ったぞ！！！

[ネコビデオ ビジュアル ソリューションズ @nvslive]

これは着水しましたね！　お疲れ様！

[Michael Sheetz @thesheetztweetz]

Starship landing burn startup just visible through soot and debris

[SpaceX @SpaceX]

Splashdown confirmed! Congratulations to the entire SpaceX team on an exciting fourth flight test of Starship!

[Anatoly Zak @RussianSpaceWeb]

@DJSnM Starship completes its 4th test mission with a (seemingly, mostly) successful vertical landing in the Indian Ocean:
https://t.co/Ddl0WoxSun

[🥚 @Spacegg135]

え？まじで

[🥚 @Spacegg135]

ええええ

[🥚 @Spacegg135]

さてベリーフロップ！

[Truthful🛰️ @Truthful_ast]

GREEN???

[Maria Pointer Nav Officer/SeaPilot (ret.) @BocachicaMaria1]

My mono scope on cell phone manned by Alex Balderas at Starship Station. #1stNeighbor