Speaking of freelancing, I am now formally a freelance writer, with experience in long and short format video scripts, research into scientific/ economic/ social/ medical topics, game and physical product development and more. Contact me for work!.Here's a (public) CV:

RT @GBruhaug: I was lucky enough to be able to see the SLAC facility (LCLS-II and I) yesterday. These are honest to god x-ray lasers! I wou….

Patent design for a two-stage kerolox spaceplane that stages at Mach 5.5 and 80 km altitude: .The idea is to use very large wings to reduce loading to ~30 kg/m^2 and only going supersonic at <18 km altitude, so the booster can be very lightweight.

What if an Apollo mission ended up with astronauts stranded in orbit around the Moon? NASA studied an expanded Gemini capsule to send to rescue them. #space #art by @Element115art .

More realistic hard-SF like this, please!.

This @WIRED Tech Support episode picked the best nuclear historian to answer their questions: @wellerstein .It's great to see the 10 gigaton yield Sundial pop up again, and of course NukeMap shows up.

A Blended Wing Body has massive advantages in lift-to-drag ratio, structural mass and flight efficiency over conventional aircraft. @Bombardier is developing the Eco-Jet to explore those advantages. Now they're flying a scale model:.

A greebly space tugboat dotted with thrusters for handling payloads in low- to micro-gravity environments. #space #art by Lancelot(独眼).

RT @beanhowitzer: Bombridin'

A beautiful asymmetric design for a luxury shuttle that handles VIP in-system transfers. #space #art by Zandoart.

For context, that 2x more than all of France, still more than Taiwan, and about a quarter of the US steel output.

22 million tons of steel per year, from this one factory.

A hydrogen-oxygen chemical thruster, seeded with potassium to render the exhaust electrically conductive, and augmented by an MHD duct to increase Isp to 500-1500s depending on losses/inefficiencies:.

An Atlas rocket boosted to 125 tons of payload!.

Liquid oxygen is light blue. Liquid ozone is much darker!

A spectacular departure of a fleet of antimatter-fuelled starships on a mission to Proxima Centauri:.It will take 18 years, reaching a cruising velocity of 0.25C.

The TPS-002 futuristic MBT, with a gigantic turret sporting a gatling gun, electromagnetic accelerators, surface-to-air missiles and even defensive lasers, all operated by only 2 crew. #art by Tom Alfaro.

Laser pulses eject particles from a thin plate for propulsion, but exhaust velocity is so high that relativistic effects intervene to increase thrust:.The most interesting region is where thrust is many times higher than a photon rocket.

Awesome concept art for Tycho Station from The Expanse. #space #art by Tim Warnock.

Doesn't this rusting pattern suggest that the RAM coating is metallic in some way?.

RT @Doroni_max: マリネリス渓谷と宇宙空母の絵