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Bizarre new planet is largest known rocky world, 40 times as massive as Earth
(www.nationalgeographic.com)
News and findings about our cosmos.
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Some people theorize that such a planet would actually be better for rocketry because they'd be forced to use significantly better propellant than chemical rockets, so, they'd start with nuclear rockets. If they got that far, anyway.
And since their planet is so much larger, it makes the vast irradiated zones created by failed launches easier to ignore!