ToughSFさんのイラストまとめ

The 'Five-hundred-meter Aperture Spherical Radio Telescope' in China is now operational. It has 4400+ moving panels and a receiver that acts like a 20K cryogenic system, allowing for extreme signal-to-noise ratios.
https://t.co/70bNUjqtb6
https://t.co/oTgSbssu1r

Air spends only milliseconds in the duct of a scramjet and does not give time for fuel to mix and burn.
One solution devised is an alternating wedge injector that creates a small subsonic area behind it.
https://t.co/afWqHzJOkw
It has only been tested at Mach 2 though.

Propane is a better fuel for rockets than methane.
98% of the Isp but 26% better overall density when cooled to 100K. It can be kept in the same insulated space as liquid oxygen and should use smaller pumps.
https://t.co/mbAKTkq5bw
@orbexspace chose it: https://t.co/0IvtUAnEtp

HEXAFLY-INT is an EU/RU/AUS effort to develop hypersonic civilian transport that fly up to Mach 7+ at 30km+ altitudes, and even with a route curving to stay over water, end up making 18,734km trips much faster and more efficiently than current jets.
https://t.co/WKBnaRPSqZ

The small spaceship in the episode 'Helping Hand' of the Love Death + Robots series was designed by Yannic Kawan.
Excellent #space #art:
https://t.co/lIiH8axpKy
It was specifically meant to be realistic and inspired by current space vehicles.

The giant Roc plane from @Stratolaunch has successfully moved onto a new life as a launcher for hypersonic testbeds, as reported by @arstechnica's @SciGuySpace.
I see new images detailing the mission plan for the release of its Talon-A test vehicle.
https://t.co/EBpLb0pxZy

The original more realistic concept for the 'Space station command center' in Wandering Earth.
Concept art by @utopieselective.
#space #art
https://t.co/t3gxIk51a7

Japan had its own development program for a combined cycle turbojet + ramjet to reach Mach 6. They used liquid hydrogen that cooled incoming air, then ran through the turbine blades. For use on a TSTO/SSTO.
ATREX: https://t.co/H3JQWXnKUK
https://t.co/XRV1Or4QW7

Researchers at @IowaStateU are developing a way to improve wind turbine efficiency by 10-20% using a second smaller rotor in front of the main one to capture wind that would otherwise be lost to the hub.
https://t.co/WW12AuKxMz

One of the most common types of exoplanet, the 'mini-Neptune', might be the result of Neptune-sized gas giants that formed close to their star and had their atmospheres quickly boiled away, like Gliese 3470b that is being heated to 927°C.

https://t.co/d16qAk07hQ