Space Travel

Space travel places great stress on the mind and body. With an eye on its implications for future space travel, a new study is the first to examine how flight involving exposure to significant changes in g-forces impacts the functioning of pilots' brains.

The secrets of the mysterious EmDrive thruster – which stumped both NASA and Chinese research teams by delivering measurable thrust without a propellant – have finally been unlocked. The thrust comes from ... drum roll ... repeated experimental error.

Faster-than-light “warp drives” may be theoretically possible, but they usually involve exotic physics well out of our reach. Now an astrophysicist has outlined a hypothetical design that could allow FTL travel using conventional physics.

Radiation is a major danger of space travel, and with human crews heading back to the Moon it’s important to understand the risks. Now we have the clearest data on that to date, thanks to an instrument onboard the Chinese lunar lander Chang’e-4.

ESA is looking at using the world's thinnest known material to build lighter, more efficient solar sails. By making sails out of one-atom-thick graphene sheets, the space agency aims to make sails capable of propelling unmanned interstellar missions.

Most oxygen in the universe isn’t in the form that we need to breathe: molecular oxygen, or O2. Now, researchers at Caltech claim to have created a reactor that can turn carbon dioxide into molecular oxygen, which could help us fight climate change here on Earth or generate oxygen for life in space.

An examination of the tissues ​of rodents that orbited the Earth in a Russian spacecraft revealed that the reduced load on their joints caused the breakdown of cartilage and signs of arthritis-like degradation​.

The lack of gravity in space means that muscles begin to waste away, and scientists have been studying these health effects on Earth with extended bed-rest experiments. In the latest, those beds will be put in a centrifuge to mimic artificial gravity, to see if that can help offset the issues.

Several experiments have shown that the EMDrive can generate thrust from basically nothing – in apparent violation of Newton’s Laws of Motion. Unfortunately, a German team has now built and tested their own EMDrive, and found that environmental factors may have been responsible for false positives.

There are plenty of strange phenomena in the universe, and fast radio bursts are among the more mysterious. So far, we don't know the source of these high-energy light bursts, but Harvard researchers propose they're caused by planet-sized alien transmitters for powering interstellar spacecraft.

At this moment, two Voyager probes are speeding out into the unknown each carrying a "golden record" with information about our planet, our many different languages, our sciences and arts. But if a new theory about life in the universe is correct, those records may never find an audience.

NASA’s Journey to Mars mission got a step closer with the successful ground test of the launch booster on the Space Launch System (SLS), the world’s most powerful rocket. It’s the second and final ground test on the booster before a crewless test flight in late 2018 with the Orion spacecraft.