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"Super-Earth" planets are giant-size versions of Earth, and some research has suggested that they're more likely to be habitable than Earth-size worlds. But a new study reveals how difficult it would be for any aliens on these exoplanets to explore space.
To launch the equivalent of an Apollo moon mission, a rocket on a super-Earth would need to have a mass of about 440,000 tons (400,000 metric tons), due to fuel requirements, the study said. That's on the order of the mass of the Great Pyramid of Giza in Egypt.
"On more-massive planets, spaceflight would be exponentially more expensive," said study author Michael Hippke, an independent researcher affiliated with the Sonneberg Observatory in Germany. "Such civilizations would not have satellite TV, a moon mission or a Hubble Space Telescope."
https://www.space.com/40375-super-earth-exoplanets-hard-aliens-launch.html
[Also Covered By]: GIZMODO
[Paper]: Spaceflight from Super-Earths is difficult
[Related]: 10 Exoplanets That Could Host Alien Life
(Score: 2) by fadrian on Tuesday April 24 2018, @02:28PM
There are a lot of other ways to lift weight than rockets. A launch loop [wikipedia.org] would be feasible, for instance. Though, to be fair, having worked next to its inventor for a couple years, I do have a bit of an unfair advantage in thinking of this solution for our poor, gravity-bound aliens.
That is all.