Gene P. a écrit : I was thiking about terraforming Mars, and how most such schemes call for big solar mirrors to heat the surface a bit. well for Mars ,...

In the atmosphere? In space? Piloted? Unpiloted? Sustaned speed? Small object (atom smashers don't count!) Hey, I wonder about these things :) I know the...

Arthur Knight wrote: Space is simply infinite linear extension in all directions. Why linear? Presuming linearity implies that linearity is somehow...

When a photograph taken under sodium light is later viewed in normal lighting it appears a much deeper orange compared to the subjective experience of being...

Looking for references on this. I'm particularly interested in the possibility that today's continents might be, at least in part, remnants of the crust of...

It seems to me that the astronaut and cosmonaut on ISS only have little time for experiments. Would it be possible to mount a sort of Comsat on the backbone...

A heavy, lengthy--say 20-30 km long--conductive cable attacjed to an Earth orbiting object (the Shuttle), tests have shown a considerable electric charge being...

wrote: According to Einstein, velocity is relative. AND the speed of light is the limit. imagine two space ships; each travelling...

I'm trying my hand at making some 3D models of classic space habitat designs. My first effort can be seen...

How does low-temp space conditions affect HDPE components?

Can anybody tell me or point me to a source for formulas for the main sequence lifetime and luminosity change with age given a star's mass? The usually-quoted...

I went through the Cassini images from Saturn and Titan and I was expecting to find a great variety of Voyager or Pioneer color tour-de-forces but instead...

How is it possible for the speed of light to be independent of the movement of the observer as Special Relativity Theory claims it is, when the concept and...

You might try to start with http://www.ScienceOxygen.com/idea.html It does not give you step-by-step instruction; it is just a collection of links about...

How much platinum and other precious metals are they finding on Mars with the rovers?

http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=36358

Just curious. Is it the heat or the pressure that seems to overwhelm probes sent to that planet? -- Yet another satisfied customer of Bartender Sam!

Can anyone suggest why the (probable) frozen sea on Mars recently reported by ESA's Mars Express orbiter wasn't spotted earlier by Mars Global Surveyor? Also...

I was reading somewhere that a company has patented a new battery technology that can hold 100 times more power per gram than current batteries do and it can...

See: http://www.spacedaily.com/reports/Scrap_The_Stick_Now.html