The spectacular star-forming region of Sharpless 305, 13,000 lightyears away:
www.flickr.com/photos/markm...
Also captured is the protostar RAFGL5232, 11 solar masses and 13,000 times brighter than our Sun.
via @badastronomy.beehiiv.com.web.brid.gy
A tour of the Moon in 4K using Lunar Reconnaissance Orbiter data, with a zoom-in on the Apollo 17 landing site... the last human mark left there:
youtu.be/nr5Pj6GQL2o
A detailed cutaway view of NASA's X-59 QueSST:
postimg.cc/QVcyTdZG
It's got parts from an F-16 and a T-38, including the cockpit.
The 108 ton Hard Mobile Launcher was meant to carry a MGM-134 Midgetman missile and withstand the blast wave from a nearby nuclear detonation by literally digging into position, ensuring it could retaliate after an enemy first strike.
Gagarin Station in 2093, a 4 km diameter Stanford Torus, flanked here by a Tereshkova-class shuttle.
They didn't forget the radiator arrays necessary to get rid of all the heat generated by the population aboard!
#space #art by Lilly Harper.
beaconsinthedark.wordpress.com/2024/01/19/g...
The first crewed interstellar starship ready to go, with a pristine debris shield and tanks full of antimatter.
10 tons of antimatter is enough to set an entire hemisphere on fire from orbit so it's dangerously close to Earth here!
#space #art by Louis_Rtr
blenderartists.org/t/interstell...
Don't ask about the optics of keeping a beam collimated acros 2.5 million lightyears.
You'd use it to train ChatGPT 5e4 of course.
You'd have on the order of 1 MW of power for every 1 kg in the Solar System. That's more than enough to move our Sun into the neighbourhood of other stars, and devour them to keep the black hole engine running, every few decades.
If you were able to turn the entire Milky Way into a photon thruster, and focused that light onto our Solar System, you'd produce 3.3x10^27 N of thrust, enough to accelerate at 1.67 mm/s^2.
The Sun could be sent to Andromeda 2.5 million lightyears away in merely 239k years.
The heart of the Phantom Galaxy, 32 million lightyears away, captured in infrared by JWST and added to previous optical Hubble observations:
www.esa.int/Science_Expl...
Project Daedalus was a BIS design for an interstellar probe that would reach 0.12C on the way to Bernard's Star and deliver 450 tons.
Two stages, each propelled by DHe3 fusion pulse units, adding up to 54,000 tons at launch (of which 92.6% is fuel):
youtu.be/9ym494x_Wi0
A civilization doesn't strictly need to leave its home system to reach KIII power output.
If it can create 9 x 10^20 quark-sized black holes (total 0.25 solar masses), each radiating 1113 TW, it can sustain 10^36 Watts for 4258 years by feeding the rest of the Sun into them.
Magnetically assisted slip casting can turn a solution of nanoparticles into a programmable structure under the influence of a magnetic field:
www.nature.com/articles/nma...
Bioinspired materials like bone or complex shapes like a tooth are demonstrated as possible to make.
The Th'Nor command cruiser from Babylon 5, rendered and turned into a printable model.
#space #art by Sergey Ivanov
www.artstation.com/artwork/rJ0GgE
SAPA's tracked vehicle transmissions, like the ACT 1075 that can handle 1500 horsepower and has 32 gears, weighs nearly 2 tons!
A modern lightweight transmission for a Leopard 2/M1A2-class tank is still as much as a large truck on its own!
sapatransmission.com/wp-content/u...
Bono's 1969 "Saturn Application Single-Stage-to-Orbit" design used a giant 6.6m wide plug-nozzle aerospike engine with 1.55 MN of thrust that could take 2.8 tons into orbit then turn around and use the nozzle as a heatshield for a propulsive landing:
projectrho.com/public_html/...
A NASA technical paper on Gas-Core Nuclear Rockets shows their Isp scaling to 6500s if they can retain the uranium plasma at 2000 bar:
ntrs.nasa.gov/citations/19...
At the 12 GW scale, they'd reach 58 kW/kg. 7.5% of reactor output becomes waste heat at 1400K to be removed by radiators.
A 1 km long accelerator nestled between Alcubierre rings, cooled by glowing radiator spines, protected by dielectric mirrors and Whipple shields, propelled by a DT fusion torch.
An excellent HardSSF space warship inspired by Atomic Rockets!
#space #art
blenderartists.org/t/warship/14...
Matte paintings for Space Marine II, depicting planets Avarax and Kadaku under assault.
#art by Kevin Decatoire.
www.artstation.com/artwork/WXB4kN
Genetically engineered techno-Samurai on the Moon!
The worldbuilding behind @solshogunate.bsky.social is quite original and the rotating colonies embedded in the surface are a great bit of realism.
youtu.be/ji3eOxiOsao
This is Melodysheep's beautiful cinematic tribute to Artemis II:
youtu.be/SGxz4LQfRpo
Whoever just watched the launch live and then didn't return for later footage is really missing out.
Mars is 8.7 times heavier than the Moon, but only 1.95 times wider.
Why does Russian ordnance have such unconventional calibers? 76.2 mm? 122mm?
The origin is the liniya unit of 0.1 inches or 2.54mm. So 30 liniya is 76.2mm. Artillery got designed to 42, 48, 50 liniya standard and so on.
The English line is 0.0833 inches though.
Why did it take 1.5 billion years for eukaryotic cells to evolve multicellularity?
The answer likely lies in the adaptations required to survive Neoproterozoic Snowball Earth, specifically metabolic energy consumption scaling in groups vs single cells:
royalsocietypublishing.org/rspb/article...
Yes!
Cross-section view of the Eurocopter Tiger, an Airbus-manufactured twin-engine multirole helicopter.
180 have been built since 1991.
Not to space, no. Just up to speeds that would melt a turbojet.
At Mach 3-4, the intake air gets heated so much when you try to slow it down to subsonic speeds that it becomes too hot for a turbojet to handle. An MHD bypass skips that obstacle.
The Shuttle Training Aircraft was a Grumman Gulfstream II modified to simulate a gliding Shuttle orbiter:
youtu.be/pCcdxhBddDI
It still needed to drop gear and reverse thrust to match the terrible L/D of the orbiter on descent.
Taking a turbojet to Mach 7 with MHD bypass:
ayuba.fr/pdf/ajax/bla...
Make the inlet air conductive with an electron beam, allowing it to be electromagnetically braked. Recover that energy and return it to the exhaust, allowing a conventional turbojet to operate in between.
