Super-Earths in need for Extremly Big Rockets — HN submission

Tue, 12 Sep 2023 14:42:26 GMT

Super-Earths in Need for Extremly Big Rockets (2018)

36 points; 50 discussion replies on HN. Paper and source history. A submission is not an endorsement.

Super-Earths in need for Extremly Big Rockets — mentioned by shagie

Sat, 24 Sep 2022 02:58:07 GMT

That's interstellar - which is a different set of problems. The main one is getting out of the gravity well of the planet. https://arxiv.org/pdf/1803.11384.pdf On a super earth, such as Kepler 20b ( https://en.wikipedia.org/wiki/Kepler-20b ) in order to lift 1 ton of mass to orbit, it would need 9000 tons of fuel -- about 3x larger than the Saturn V. To get the JWST off the planet, it would take 55,000t of fuel. To get that 45t of an Apollo mission off the planet, it would take about 400,000t of fuel over 100x more than the fuel needed for Saturn V.

Paper and discussion history. A mention is not an endorsement.

Super-Earths in need for Extremly Big Rockets · HackerPapers discussions

Super-Earths in need for Extremly Big Rockets — HN submission

Super-Earths in need for Extremly Big Rockets — mentioned by shagie