ToughSFさんのイラストまとめ

In an alternate timeline, NASA would have developed an 'Advanced Hydrocarbon Engine' running on oxygen and RP1, delivering 5.5 MN of thrust at 332s Isp, and sized its future heavy 100-140t payload launcher accordingly:
https://t.co/JPqvLwjPnX

'Ground substance' is the unlabelled background to most biology diagrams.
It's mostly water turned to jelly by glycoproteins and it plays a vital role in exchanging gases between cells and blood, preventing tissues from being crushed or impeding the advance of bacteria.

Minimalist depictions of space based on extra-terrestrial surfaces.
#space #art by 'pang p'.
https://t.co/9El8Px0jRZ
https://t.co/qceWU7fZpz
https://t.co/K0HggzRA2M
https://t.co/borkVnrFnb

The interiors of gas giants can be studied indirectly by the magnetic fields that surround them.
A @johnshopkins simulation of Saturn's interior suggests that a layer of helium rain is mixed into the metallic hydrogen that generates its magnetic field.
https://t.co/PhIO5gQSJJ

Early versions of the MX-1626 Convair project, which went on to become the B-58 'Hustler' supersonic bomber.
https://t.co/dw2OStS5NH
They have different engine configurations but all feature the detachable belly-mounted 'mission pod'.

The 'SLV Wallfish', an old cargo-moving spaceship that had a low-powered fission drive, necessitating a rotating habitat to keep the crew healthy on long trips.
Concept art done for @paolini's 'To Sleep in a Sea of Stars'.
#space #art by @terraformart.
https://t.co/eOTKukufjV

Sketch of an interceptor craft that seems to be a cross between a Leduc 0.22 experimental turbo-ramjet, and the delta wings of a Mirage III.
#art by AST21.
https://t.co/NpUeEuYIW3

The Orbital Can System from @NexusAurora uses the full capacity of @SpaceX's Starship to launch 8m diameter standardized habitat modules. They are large enough to spin up for artificial gravity, or they can be assembled into larger structures. Just four of them would have 2508m^3

Of all the rocky inner planets, Mercury is perhaps the most exceptional.

It is small, but very dense and nearly its entire volume is occupied by a metal core. Compare its cross-section to Earth, Venus and Mars to see how different it is from them.

It also have a magnetic field.

The hard part about a thermonuclear weapon is acquiring the material for a fission primary and arranging it in a precise configuration (the explosive lens).
What if you could get rid of that part and ignite fusion with high explosives directly?
https://t.co/dvDLsok9jF