Talk:RyansWorld: The Colonization of Space

where,when is colonization of Moon? i rad mart, venus and outer but nothing about moon--Fero 17:59, 31 March 2009 (UTC)

Earth -Mars ditance= MarsSun distance (228,000,000 km) Minus EarthSun distance(150,000,000 km) = 78,000,000 km based in wikipedia

EarthMoon distance= The average centre-to-centre distance from the Earth to the Moon is 384,403 km, about thirty times the diameter of the Earth.

I support of course humans colonized moon first; dont you?--Fero 18:22, 31 March 2009 (UTC)

The escape velocity of a body is determined by its gravitational pull, not its atmosphere. Since Martian gravity is only about 0.4G, its escape velocity is very much lower than Earths, not higher. Martian escape velocity is 5.02 kilometers per second, which is about 45% of Earths escape velocity.

Whilst we probably have enough technology to colonise Mars now (although it would be ruinously expensive), we really don't have enough to colonise Venus, nor are we likely to for a very, very long time. It has an atmosphere partially composed of sulpuric acid (and other, nastier substances), a surface pressure of 93 bar, and a surface temp of 460 C. No currently concievable construction technique could withstand those conditions well enough to consider settling humans on the planet permantently. Use of remote operated robots to exploit local resources might be possible, but the technical challenges would mean that any recovered material would have to be extraordinarily valuable to make such an operation even faintly economic.

Mars is merely cold, and has a thin atmosphere, and it seems likely that both of those could be addressed by a wide variety of means, and although some schemes rely on assumptions we can't really test yet (such as large scale presense of sub surface ice), others rely solely on external, known resources (such as bombarding the surface with ice comets)

TallTroll 10:24, March 12, 2010 (UTC)