On 3/8/2017 9:16 AM, S Ergio wrote:
On 3/8/2017 6:42 AM, Yousuf Khan wrote:
http://www.zdnet.com/article/nasa-pr...a-second-home/


how far away is Mars L1 Lagrange Point from Mars ?

about 141,000,000 miles.

You're completely wrong. You can be sure that you're completely wrong
because that distance is greater than the distance between the Earth and
the Sun! The distance you came up with is the distance between the Sun
and Mars.

The L1 point for Mars is actually about 655,000 miles, or about 1
million kilometers.

http://www.wolframalpha.com/input/?i...point+Mars+Sun

how does magnetic field strength decline with distance ?

1/d^2 ?

so you need a magnet of at least 2*10^16 telsa ? ?

Earth's magnetic field at the surface is only 54 microteslas. The
devices they are talking about are about 1 or 2 teslas, which should be
enough to protect Mars.

http://www.wolframalpha.com/input/?i...magnetic+field

why not just put it on the surface ? by the way, you will have to water
cool it too.

On the surface, you'd need multiple devices. In orbit, only need the one.

The power source is likely to be the Sun, through solar panels. Cooling
through radiators into space.

While Green admits the idea is somewhat "fanciful,"

this dude works at NASA ???

Why not? You've certainly shown that you don't know what you're talking
about.

Yousuf Khan