- Many exoplanets are heavier and larger than the Earth, and have higher surface gravity. This makes space-flight on these worlds challenging, because the required fuel mass for a given payload is an exponential function of planetary surface gravity. This has implications for space exploration. https://www.space.com/40375-super-earth-exoplanets-hard-aliens-launch.html 14 comments space
- No Way Out? Aliens on 'Super-Earth' Planets May Be Trapped by Gravity https://www.space.com/40375-super-earth-exoplanets-hard-aliens-launch.html?utm_source=notification 2989 comments space
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- Space.com: NASA, Space Exploration and Astronomy News https://space.com 152 comments
- [1804.04727] Spaceflight from Super-Earths is difficult https://arxiv.org/abs/1804.04727 88 comments
- Should Humanity Try to Contact Alien Civilizations? | Space http://www.space.com/28632-active-seti-search-alien-life.html 34 comments
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