Huge Rectangle Found Just Below Moon’s Surface

Value Walk ^ | 10-1-2014 | Brendan Byrne

[Rodamala]

Put a point on a sphere and make 3 lines from it 120 degrees apart. extend 2 of the lines from that point form part of a great circle. now there will be 2 other points you can put on those lines that will have similar great arcs that intersect at the 4th point.

[Rodamala]

Thusly:

[BenLurkin]

Ah!

[machman]

What about this???

[molson209]

it’s over by that crater

[Dr. Sivana]

That's the location of the women who love engineers.

[SunkenCiv]

Draw a triangle on a sphere with one corner on one of the poles, and the other two corners on the Equator, and you have a triangle with three 90 degree corners. The surface of a sphere can be covered by eight of those.

Split the surface of the sphere into four equal triangles and you have four triangles with 120 degree corners. These are consequences of spherical geometry.

[SunkenCiv]

Oops, and thanks Rodamala.

[SunkenCiv]

Thanks colorado tanker. Extra to APoD.

BTW, I’m looking for someone to take over the APoD list, must be more reliable than the current listmeister (me) who spends far too little time online.

[Cboldt]

Deodato - as played in the movie "Being There"