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[@ToughSf](/creator/twitter/ToughSf)
"Combining chemical propulsion with X MW solar-electric thrusters to send a 400t crewed mission on an XXX day round trip to Mars: It's heavily constrained by just XXX W/kg EP power density and having to lug around a XXX ton chemical fuel stage"  
[X Link](https://x.com/ToughSf/status/1973100533184602545) [@ToughSf](/creator/x/ToughSf) 2025-09-30T19:00Z 29.7K followers, 25.1K engagements


"A space station with lots of rings Sadly I don't see any spinning nor thick enough to be habitat spaces so what purpose could they serve #space #art by Nana Dhebuadze"  
[X Link](https://x.com/ToughSf/status/1977645487915503922) [@ToughSf](/creator/x/ToughSf) 2025-10-13T08:00Z 29.7K followers, 1382 engagements


"A pure deuterium-deuterium fusion rocket would have an exhaust velocity of XXXXX C. With a high mass ratio and a magnetic sail for propellant-free braking a DD fusion starship could cruise at 0.29C"  
[X Link](https://x.com/ToughSf/status/1978113574527754460) [@ToughSf](/creator/x/ToughSf) 2025-10-14T15:00Z 29.7K followers, 7261 engagements


"Majestic space scenes showing a mobile fuel depot orbiting various gas giants. #space #art by Isaiah"  
[X Link](https://x.com/ToughSf/status/1978370258256728093) [@ToughSf](/creator/x/ToughSf) 2025-10-15T08:00Z 29.7K followers, 8299 engagements


"'Swarm' a XXX kW one-way solar electric vehicle for towing solar power satellites into GEO: It starts at XX tons to be delivered into LEO by the Argus spaceplane but produces a measly 16N of thrust at 2500s Isp from Krypton ion engines"  
[X Link](https://x.com/ToughSf/status/1978475953329471555) [@ToughSf](/creator/x/ToughSf) 2025-10-15T15:00Z 29.7K followers, 4240 engagements


"The ISV Aethera a 250m long antimatter-powered relativistic starship:"  
[X Link](https://x.com/ToughSf/status/1978536355685974297) [@ToughSf](/creator/x/ToughSf) 2025-10-15T19:00Z 29.7K followers, 8535 engagements


"Solar-powered airships for high altitude (18-20 km) long-endurance surveillance and early warning: X of these could cover the entire US east coast with XXX km range radar but they'd need to be 185m long and generate XXX kW"  
[X Link](https://x.com/ToughSf/status/1978777945125556301) [@ToughSf](/creator/x/ToughSf) 2025-10-16T11:00Z 29.7K followers, 2853 engagements


"Prototype underwater weapons based on flechettes and sonar instead of bullets or magnifying scopes. #art by Joe_Chen"  
[X Link](https://x.com/ToughSf/status/1979095039721578872) [@ToughSf](/creator/x/ToughSf) 2025-10-17T08:00Z 29.7K followers, 18K engagements


"More and more industries are realizing the value of spending XXXX% of their budget on filming the work they do"  
[X Link](https://x.com/ToughSf/status/1979391713387974918) [@ToughSf](/creator/x/ToughSf) 2025-10-18T03:38Z 29.7K followers, 149.1K engagements


"A large reusable winged booster with underslung orbiter from a Lockheed Martin proposal for early Space Shuttle concepts:"  
[X Link](https://x.com/ToughSf/status/1979502725416309058) [@ToughSf](/creator/x/ToughSf) 2025-10-18T11:00Z 29.7K followers, 12.4K engagements


"HNLMS Johan de Witt is a 15000 ton Rotterdam-class ship in the Royal Netherlands Navy. It's a 265m long Landing Platform Dock with onboard hospital capacity for XXX APCs/33 MBTs large helicopter landing pads and well decks for deploying amphibious landing craft"  
[X Link](https://x.com/ToughSf/status/1979623516342460828) [@ToughSf](/creator/x/ToughSf) 2025-10-18T19:00Z 29.7K followers, 3960 engagements


"A McDonnel Douglas pamphlet highlighting their Space Shuttle concepts which aimed for a fully reusable pair of winged craft drawing from lifting body and X-plane research:"  
[X Link](https://x.com/ToughSf/status/1979925509095272861) [@ToughSf](/creator/x/ToughSf) 2025-10-19T15:00Z 29.7K followers, 3966 engagements


"A photonic laser thruster demonstration at the XXX mN level: A laser beam is recycled between a lightsail and precisely aligned mirrors to produce far more thrust per watt than you'd expect from a single reflection. Can it work over long distances"  
[X Link](https://x.com/ToughSf/status/1980227508642763164) [@ToughSf](/creator/x/ToughSf) 2025-10-20T11:00Z 29.7K followers, 5053 engagements


"From this US Army-sponsored study: -Solid sliding armature operates below X km/s; going higher means plasma armatures -There is a limit to single-rail performance at X km/s -Highest achieved was Rashleigh/Marshall in 1978 with XXX km/s 1g projectile"  
[X Link](https://x.com/ToughSf/status/1980287899787575769) [@ToughSf](/creator/x/ToughSf) 2025-10-20T15:00Z 29.7K followers, 3596 engagements


"Antimatter annihilation rocket designs featuring an insane storage scheme where charged anti-hydrogen is held between electric plates at XXX kV with enough force to withstand 3g acceleration:"  
[X Link](https://x.com/ToughSf/status/1967181541097800145) [@ToughSf](/creator/x/ToughSf) 2025-09-14T11:00Z 29.7K followers, 12.5K engagements


"The first US space station was Skylab: a repurposed Saturn IV-B tank an Apollo command module and a telescope already integrated on the ground all launched in a special shroud"  
[X Link](https://x.com/ToughSf/status/1977026404794466455) [@ToughSf](/creator/x/ToughSf) 2025-10-11T15:00Z 29.7K followers, 8752 engagements


"Flight mishap aboard a Weyland-Yutani space shuttle. You won't be escaping LV-426 this time #space #art by Benoit Godde"  
[X Link](https://x.com/ToughSf/status/1978732654624489613) [@ToughSf](/creator/x/ToughSf) 2025-10-16T08:00Z 29.7K followers, 2396 engagements


"1985 concept for a Orbital Transfer Vehicle. It used aerobraking to return payloads from GEO to LEO without a braking burn and with its lifting body design perhaps get a free inclination change out of it too. But it would be dead weight in all other maneuvers"  
[X Link](https://x.com/ToughSf/status/1978838346735436272) [@ToughSf](/creator/x/ToughSf) 2025-10-16T15:00Z 29.7K followers, 3179 engagements


"Molten steel spills at Saarstahl AG in Germany:"  
[X Link](https://x.com/ToughSf/status/1979140333880627249) [@ToughSf](/creator/x/ToughSf) 2025-10-17T11:00Z 29.7K followers, 13.1K engagements


"The AMP suit from Avatar is 4.2m tall and weighs 1700 kg. Its main weapon is a 30mm cannon. Later "Alpha Centauri Expeditions" uses these suits to assist tourists visiting Pandora"  
[X Link](https://x.com/ToughSf/status/1979200729970581875) [@ToughSf](/creator/x/ToughSf) 2025-10-17T15:00Z 29.7K followers, 4854 engagements


"The hottest transitioning planet: KELT-9b is hotter than most stars with a dayside temperature of 4600K because it closely orbits WASP-33 that's 6.6x times brighter than the Sun. It's being blown away at a rate of 10000 - 10000000 tons per second"  
[X Link](https://x.com/ToughSf/status/1979261135678566550) [@ToughSf](/creator/x/ToughSf) 2025-10-17T19:00Z 29.7K followers, 4462 engagements


"The LM6000 'aeroderivative' gas turbine starts up in X minutes and delivers XX MW alone (41% efficiency) or XXX MW in paired combined cycle output (55% efficiency) ramping up at XX MW/min thanks to water-injection cooling:"  
[X Link](https://x.com/ToughSf/status/1979985905512284181) [@ToughSf](/creator/x/ToughSf) 2025-10-19T19:00Z 29.7K followers, 10.9K engagements


"@CuriepolisBuch Yes. which is why realistic O'Neill cylinders come with huge sets of mirrors and radiators panels"  
[X Link](https://x.com/ToughSf/status/1980490771586498725) [@ToughSf](/creator/x/ToughSf) 2025-10-21T04:26Z 29.7K followers, XX engagements


"Every year there's a minimum-energy Hohmann transfer to XX Psyche that takes around X year. But the Psyche mission chose a X year voyage from 2023 to 2029. I hope we at least get nice Mars flyby photos out of it"  
[X Link](https://x.com/ToughSf/status/1980589893722996797) [@ToughSf](/creator/x/ToughSf) 2025-10-21T11:00Z 29.7K followers, 3221 engagements


"Interesting description of a "Solar Photon Thruster" which is a variant on a solar sail with a second mirror to redirect light and therefore thrust in any direction: It's combined with a 'pole-sitting' statite concept"  
[X Link](https://x.com/ToughSf/status/1975214468419424557) [@ToughSf](/creator/x/ToughSf) 2025-10-06T15:00Z 29.7K followers, 3510 engagements


""Outer Space" by Sander van den Berg is a magical experience. The original is gone but the NASA version remains"  
[X Link](https://x.com/ToughSf/status/1976603626815832380) [@ToughSf](/creator/x/ToughSf) 2025-10-10T11:00Z 29.7K followers, 4715 engagements


"@SavantLand The lithium here is to 'improve plasma performance' and coat the surfaces exposed to the reactor's interior:"  
[X Link](https://x.com/ToughSf/status/1979590557027668376) [@ToughSf](/creator/x/ToughSf) 2025-10-18T16:49Z 29.7K followers, 2272 engagements


"Patent for a mobile chemical-fuel laser: It uses nitrogen trifluoride-ethylene reactants and a diesel-oxygen steam generator for power. It's meant as a simpler X times more compact upgrade to the THEL ACTD that already fit inside a XX m long container"  
[X Link](https://x.com/ToughSf/status/1980348291243209106) [@ToughSf](/creator/x/ToughSf) 2025-10-20T19:00Z 29.7K followers, 2429 engagements


"An obscure particle beam weapon program: Delphi. It used a laser to create a plasma channel through air then shoot a electron beam through it to help discriminate warheads from decoys. Refs:"  
[X Link](https://x.com/ToughSf/status/1977751187299717134) [@ToughSf](/creator/x/ToughSf) 2025-10-13T15:00Z 29.7K followers, 5284 engagements


"A collection of ships from Legend of the Galactic Heroes ranging from huge to gigantic. #space #art by @Lobolabo"  
[X Link](https://x.com/ToughSf/status/1979819815268176323) [@ToughSf](/creator/x/ToughSf) 2025-10-19T08:00Z 29.7K followers, 21.3K engagements


"The MC-130J Commando II with amphibious capability looks. hilarious. It needs gigantic pontoons to stay afloat"  
[X Link](https://x.com/ToughSf/status/1980650282766815340) [@ToughSf](/creator/x/ToughSf) 2025-10-21T15:00Z 29.7K followers, 2264 engagements