I am having a scenario as under. I need to calcluate approx. minimum round trip for comunication where path used is a satellite link. consider the transmission...

Someone please tell me why spacecraft are designed to reenter the earth's atmosphere at high speed. Isn't there some way to come down slowly, so the heat...

A new planet, GJ 1214 b, has been found some 40 l.y. away with 2.678 Earth radius and 6.55 Earth mass. . What surprises me is its density, about 1870 kg/m^3,...

Does anybody know the name of the mars-sized planet that supposedly hit the earth and created the moon was called? I was watching Natural World just now and...

Hi there, One thing that I always wondered about space flight is why most agencies (NASA, etc.) do not use a more efficient way of lifting into space. The...

Was the Moon in a close Earth orbit essential in preventing a runaway greenhouse effect like we see on Venus. The Earth was much more volcanically active in...

Hi... I'm doing a research project for school on the apollo missions and I have been having trouble finding information on what was used to shield the apollo...

Are there any way for rockets to fly in space , other then throwing mass out in one direction and moving in other

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

PHOENIX WILL LAND AT MARS' ICY NORTH POLE, STUDY WATER, SEARCH FOR HABITABLE ZONE From Lori Stiles, UA News Services, 520-621-1877 August 4, 2003 Contact...

A hurrican can be broken up with a strong laser from a weather satellite via a remote control from somebody on earth. Nobody has to be in harms way. That...

Donald Savage Headquarters, Washington September 17, 2003 (Phone: 202/358-1547) Carolina Martinez Jet Propulsion Laboratory, Pasadena,...

http://hubblesite.org/newscenter/archive/2003/29/text FOR RELEASE: 11:00 a.m. (EDT) September 25, 2003 CONTACT: Donna Weaver Space Telescope Science...

http://newsinfo.iu.edu/news/page/normal/982.html World's largest astronomical CCD camera installed on Palomar Observatory telescope Indiana University July...

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,...

Why is absolute zero approximately -460 F, yet the maximum possible amount of heat is seemingly infinite? There is certainly an asymmetry. Why is there no...

It was supposed to have been launched early 2007. Obviously this didn't happen, but I've been unable to find any information about it, not even a statement...

... belongs in the Smithsonian Air and Space Museum, not spread across the earth as a debris field. http://www.msnbc.com/news/994737.asp?0cv=TB10 begin...

I was wondering why NASA accepts a shortened life for the Mars Rovers due to "dust build-up on the solar panels". Is cleaning them beyond their rocket...

The daytime lunar temperature swings between something like 400K and 100K. What is the average temperature several meters into the lunar soil? Above or below...