News for hackers. Stuff that matters.

A comment on Starship Update. Parent comment

Re:Starship Update by CobrastanJorji on Sunday September 29, 2019 @02:23AM (#21105458)
If the Earth were 3x heavier, birds wouldn't be able to fly, at least not the way they are now. Sparrows can barely get airborne when they're full, let alone at triple their weight.
[ Parent | on HN ]
Re:Starship Update by ars on Sunday September 29, 2019 @02:52AM (#21105538)
Air density would be three times higher though. So they might still be able to fly.
[ Parent | on HN ]
Re:Starship Update by CobrastanJorji on Tuesday October 01, 2019 @01:29PM (#21128087)
Ooo, that's a good point!
[ Parent | on HN ]
Re:Starship Update by icebraining on Sunday September 29, 2019 @07:18AM (#21106411)
> at least not the way they are now.

Yeah, but they wouldn't be, because the extra mass would have influenced their evolution.

[ Parent | on HN ]
Re:Starship Update by rexer on Sunday September 29, 2019 @01:11PM (#21108232)
Extra weight. If gravity is the only thing changed, mass would remain constant.
[ Parent | on HN ]
Re:Starship Update by icebraining on Sunday September 29, 2019 @01:31PM (#21108347)
Since the discussion is about "earth's gravity", I'm assuming the change would be in its mass, not in the universal gravitational constant, which is not Earth-specific.
[ Parent | on HN ]