The existing shuttle is due to be retired before long, even if NASA decides to fly it again at all, and will need to be replaced. Now, I rather doubt that...

Am most interested in the methods JPL uses to calculate orbits of NEOs and how frequently the data used to calculate the orbits is updated for close approach...

I have a few questions about the greenhouse effect 1. What is the percentage of the atmosphere is water vapor? 2. How potent a greenhouse gas is water...

Does anyone know of a COTS star pattern identification software? Obviously, 'lost in space' will also work (might be more expensive, though). References to...

Isn't spiral galaxy like M74 http://antwrp.gsfc.nasa.gov/apod/ap050330.html is well enough proof what gravity probe B is trying to prove, that earth rotation...

1) Was the International Space Station/Space Station Freedom meant to orbit at 300-400km originally (c1990), or was it slated for higher altitudes? 2) How...

Would it be possible to set up a circular, polar orbit around Mercury such that it always followed Mercury's terminator? Also, could such a "dawn tracking...

http://www.jpl.nasa.gov/news/features/thaw-092903.cfm Spotlight Feature Early Arctic Thaw Could Have Chilling Effect Written by Rosemary Sullivant Media...

Please excuse this naive query: How is it possible to know that we have not just deposited some "earth DNA" on Titan, via a single (or multiple) viral or...

Presumably some amount of ejecta from the earth made its way to the moon, so would we be able to detect such materials from the earth? That is, at presumably...

MEDIA RELATIONS OFFICE JET PROPULSION LABORATORY CALIFORNIA INSTITUTE OF TECHNOLOGY NATIONAL AERONAUTICS AND SPACE ADMINISTRATION PASADENA, CALIFORNIA 91109....

Hello, I don't know if anybody has asked this earlier, but I'd appreciate it if somebody could point me to the right direction. I am trying to find the...

Hi, I've a question which has been wandering in my head for a while. Maybe this is not the right place to ask it, but maybe someone could point me to a better...

I was fortunate to see this evening's lunar eclipse. I noticed, when it was 3/4 dark that I could see a dim orange glow that was in the shadow region. I could...

Is anyone aware of there being electrons detected moving towards the Sun, from any source? The Solar Wind contains electrons (and protons) moving away from...

descending into Endurance Crater, this picture almost is reminiscent of the game Stadium Checkers, with some geological distortion over time. except that the...

http://www.esa.int/export/esaCP/SEMY3X7O0MD_index_2.html Enormous X-ray solar flare seen by SOHO European Space Agency October 28, 2003 The huge solar...

In quantum mechanics, all the forces of nature are mediated by the exchange of particles such as photons, and these particles must obey this cosmic speed...

European Space Agency Science News Release SNR 13-2003 Paris, France 18 August 2003 ESA sees stardust storms heading for Solar System Until ten years ago,...

http://www.esa.int/export/SPECIALS/Aurora/SEMQH0XLDMD_0.html ESA's first step towards Mars Sample Return European Space Agency 12 November 2003 What is the...