Hi all Please excuse if this comes up as a double post. Anyway I bumped into this on the 'Net...

Hi all Please excuse the X-posting. (a) I'm not sure where this is appropriate. (b) I'm never sure WHERE my posts will get through these days. Anyway I...

I do not know if this is an existing theory, I only came up with it today, so please bear with my ignorance. Consider the moon (since its diameter is so much...

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 ,...

Here's an article: http://www.physicsweb.org/articles/news/8/11/8/1 You know how when you look at curved outlines on hi-resolution games, you can see the...

I read recently that there is a great need for several tons of lunar regolith simulant. What would be required for someone to supply that need? How hard is it...

Is JIMO/Prometheus the sort of project that could be accelerated with a lot more funding?

If you puke in a space capsule can you smell it floating around? What about in a vacuum. Does smell travel in a vacuum? I assume you need air for...

Power density at the distance of Earth's orbit is about 1.4 kW/M^2. at the distance of Venus's orbit, it is about 2.6 kW/M^2. So it is a little less than...

I already posted a question about heat asking how heat travels through a vacuum, but everybody assumed I was talking about starlight and I therefore got a...

Important find:when is the light wave-motion ?and when is particle-motion? I think that physics generally known as light has wave-particle duality being...

" Universe matter develop equation" must replace "The theory of relativity" finally Describe "universe matter develop series"(see《Universe deep...

Universe deep internal relation----earth center "empty hole" theory Astronomer have calculated that universe consist of dark...

I've been following all the discoveries of the extrasolar planets with great interest, particularly the recent Neptune-sized discoveries. However, most of the...

I was reading somewhere that they made the first light antenna. I suppose that would make it 100's of times quicker than radio signals.? What if Aliens only...

I was reading somewhere that they made the first light antenna. I suppose that would make it 100's of times quicker than radio signals.? I know we have 100's...

Can you fire a gun in space? Will the powder burn? And if you made the reloads in space in a vacuum would they fire? Will dynamite explode in space? Will a...

I just finished reading Brian Greene's "The Elegant Universe". The section in chapter 15 titled "What are Space and Time, Really, and can we do without...

I would've posted this question in the chemistry newsgroup but the people in there seem like idiots and I fear it would never get answered. Heat is defined as...

In case anyone out there is into this kind of thing: http://www.geocities.com/achilles03/ Total cost: just under $1,000 Dave