Category: Science
Terraforming Mars or Venus?
How is the size of a planet related to its atmosphere
What if the Earth had no moon (part 2)
Once more on the search for exoplanets, and Alpha Centauri

This morning I came across this very interesting article on the Centauri Dreams website. By the way, Centauri Dreams, the website of the Tau Zero Foundation, is a very rich source for writers of realistic SF, especially in relation to planetary exploration and interstellar travel. The article summarises results and…
Communication in space

Electromagnetic waves, whether gamma ray, microwave, radio or visible light frequencies, travel through vacuum at the speed of—well, uhm—light. When on Earth, this means communication is pretty much instant. If the distance travelled in one second by a photon, a light particle, were a string, it would wrap around the…
What would earth be like without the Moon?
Why should we colonise space?
This is, of course, a very good question. It seems that at the moment no one has a satisfactory answer. Space travel is expensive, it’s risky, only few people appear to benefit directly, for a questionable gain, and there are more ‘worthy’ causes to spend our money, so why indeed…
Exoplanets: could Alpha Centauri have any?
what makes a habitable planet?

Red dwarf and planet. Image pilfered from the Hubble Space telescope site, a great source of space pictures, all of which are free to use. Last week, scientists analysing data obtained by the Keck ‘planethunting’ observatory (located at the summit of Mauna Kea, Hawaii) revealed data about the GJ 581…