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Graphene at 20: still no sign of the promised space elevator, but here’s how this wonder material is quietly changing the world (theconversation.com)
submitted 3 weeks ago by sabreW4K3@lazysoci.al to c/futurology@futurology.today
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[-] threelonmusketeers@sh.itjust.works 6 points 3 weeks ago

The fastest a person has ever gone is mach 6.7 or 2.02km/s.

Astronauts on the ISS are currently zipping along at at 7.67 km/s just fine. The issue is acceleration, not speed. Tethers rotate fairly slowly, so the acceleration should be less than that of a rocket launch.

[-] Kazumara@discuss.tchncs.de 7 points 3 weeks ago* (last edited 3 weeks ago)

Astronauts on the ISS are currently zipping along at at 7.67 km/s just fine.

And we've all been zipping around the sun at 29.78 km/s since each of our inceptions.

[-] Cypher@lemmy.world 5 points 3 weeks ago

Our Sun moves around the centre of the Milky Way at a speed of 240 km/s or 864,000 km/h, so do we plus or minus ~30km/s!

this post was submitted on 23 Sep 2024
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