News for hackers. Stuff that matters.

A comment on Michael Collins, Apollo 11 astronaut, has died. Parent comment

Re:Michael Collins, Apollo 11 astronaut, has died by soarfourmore on Wednesday April 28, 2021 @02:55PM (#26972779)
It's plausible. The moon's width is 2,158.8 miles, and I could imagine an explorer being >3000 miles from another human
[ Parent | on HN ]
Re:Michael Collins, Apollo 11 astronaut, has died by Igelau on Wednesday April 28, 2021 @04:24PM (#26973730)
The actual travel distance would be further because you can't just bore through the moon.
[ Parent | on HN ]
Re:Michael Collins, Apollo 11 astronaut, has died by cbm-vic-20 on Wednesday April 28, 2021 @03:08PM (#26972914)
I'm too lazy to do the math, but what's the point-to-point distance (through the planet) of points that are 5000km along the surface?
[ Parent | on HN ]
Re:Michael Collins, Apollo 11 astronaut, has died by banana_giraffe on Wednesday April 28, 2021 @07:51PM (#26975691)
Assuming a spherical earth, it's 4873 km.
[ Parent | on HN ]
Re:Michael Collins, Apollo 11 astronaut, has died by foobar1962 on Wednesday April 28, 2021 @10:39PM (#26976864)
Assuming a spherical earth in a vacuum... One of the few times that simplifying assumption matches reality.
[ Parent | on HN ]
Re:Michael Collins, Apollo 11 astronaut, has died by kelnos on Thursday April 29, 2021 @03:47AM (#26978455)
Not quite; the Earth is an oblate spheroid. Assuming it's a sphere is certainly a close enough approximation for this exercise, though.
[ Parent | on HN ]
Re:Michael Collins, Apollo 11 astronaut, has died by dylan604 on Thursday April 29, 2021 @02:15AM (#26977958)
How far is it if you assume a flat earth?
[ Parent | on HN ]
Re:Michael Collins, Apollo 11 astronaut, has died by hulahoof on Thursday April 29, 2021 @02:24AM (#26977991)
5000km
[ Parent | on HN ]