space travel

Add one more thing to the list of mysteries, theories, and unsubstantiated ideas that will be confirmed/denied/debunked if CERN ever gets the Large Hadron Collider up and running: hyperdrive spacecraft propulsion.

In 1924, German mathematician David Hilbert published a paper noting a pretty amazing side effect to Einstein's relativity: a relativistic particle moving faster than about half the speed of light should be repelled by a stationary mass (or at least it would appear to be repelled, to an inertial observer watching from afar).

Just months ago, North Korea set the Japanese and American militaries on alert with its ill-advised, and failed, attempt to send a payload-bearing rocket into space. This morning, a much friendlier South Korea succeeded in doing exactly that, though the research satellite that South Korea Space Launch Vehicle-1 was ferrying failed to find its intended orbit.

Commercial Flight: 2020

The long, skinny tube has to go. Tasked with improving the nation's air transportation, NASA wants airplanes to burn 40 percent less fuel than a 777 by 2020 and 70 percent less by 2030. Not only that, it wants those same planes to be whisper-quiet. The best -- and perhaps the only -- way to reach these ambitious benchmarks is to design commercial planes more like stealth bombers and less like pencils.

Since January, SpaceX's heavy-payload Falcon 9 launch vehicle has stood 180 feet above Space Launch Complex 40 at Cape Canaveral, undergoing ground-systems tests in the run-up to its first test flight. The reusable Falcon series, named for the Millennium Falcon in Star Wars, has nine engines that provide more than a million pounds of thrust. Last September, the smaller, 70-foot-tall Falcon 1 became the first privately developed liquid-fueled rocket to orbit the Earth.

NASA plans to donate or lend three of its space shuttles to museums in 2010 -- but the co-founder of a rocket launch firm thinks the shuttles could help send humans to Mars.

A mere three years after Burt Rutan´s SpaceShipOne skimmed the edge of space to capture the $10-million Ansari X Prize, more than half a dozen companies are furiously building and testing spacecraft designed to take paying passengers on suborbital journeys and beyond.

Although they may have other talents, few astronauts are much good at sleeping in space. NASA researchers have been studying the problem by hooking up space shuttle crews to all sorts of sleep-monitoring devices. The mystery remains unsolved, but one surprising discovery has been made: There's virtually no snoring in space.