Ask FunTrivia: Questions and Answers

**Answers to 100,000 Fascinating Questions**

Question #50614. Asked by **Arpeggionist**.

Last updated **Sep 02 2016**.

Answer has

21 year member

3273 replies

Answer has

I'm pondering the concept of Newton's inverse-square law of universal gravitation...

(At an altitude of 200 miles, according to Newton's inverse-square law of universal gravitation, gravity is just 10% weaker than it is at the Earth's surface. "Weightlessness" and "zero gravity" describe an astronaut's sensation in orbit, but the conditions under which an astronaut floats about within a spacecraft would be better described as free fall.)

http://ataridogdaze.com/weightless/outer-space.shtml

(At an altitude of 200 miles, according to Newton's inverse-square law of universal gravitation, gravity is just 10% weaker than it is at the Earth's surface. "Weightlessness" and "zero gravity" describe an astronaut's sensation in orbit, but the conditions under which an astronaut floats about within a spacecraft would be better described as free fall.)

http://ataridogdaze.com/weightless/outer-space.shtml

Response last updated by

May 18 2005, 6:26 PM

Answer has

21 year member

772 replies

Answer has

Less than six miles according to https://www.quora.com/At-what-altitude-does-the-Earths-gravity-no-longer-have-an-effect-on-the-astronauts-or-the-space-shuttle which has it as between approximately 24,000 and 32,000 feet altitude.

nb updated link explains our gravity tends to zero so becomes minuscule but present nonetheless, see first diagram. (satguru)

nb updated link explains our gravity tends to zero so becomes minuscule but present nonetheless, see first diagram. (satguru)

Response last updated by

May 19 2005, 12:37 AM