In this time line, explore the Cold War's secret space race.—Rima Chaddha Following World War II, the United States and the Soviet Union entered into the Cold War game of spy-versus-spy that ...

Mathematicians dating back to Georg Bernhard Riemann (1826-1866) have studied the properties of multiple connected spaces in which different regions of space and time are spliced together.

Very Alice in Wonderland. NOVA: Your inquiries about space travel for Contact sparked a whole new direction in research on time travel. How does that make you feel? Hear Sagan via RealAudio Sagan ...

Q: I keep hearing that there is a time frame of about 15 years before we have a working space elevator. I believe this time could be shortened if the country was mobilized behind this concept the ...

Answer: You ought to be a space engineer, because the people at NASA and over in Russia looked at the same concept. And essentially, metal over time suffers ... I watched you on NOVA this week ...

Mae Jemison is a physician, engineer, educator, entrepreneur and the first woman of color in the world to go into space ... NOVA Science Trust, the Corporation for Public Broadcasting, and PBS ...

Three NASA astronauts are speaking at a news conference after spending more than seven months in space aboard the International Space Station.

Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close ...