Radio communications have surprising influence on Earth's near-space environment

Humans have a measurable effect on Earth's near-space environment, new research shows.

China Starts Construction of One of World’s Largest Cosmic Ray Observatories

China has started its construction of one of the world’s largest observatories studying the origins of cosmic rays, local media reported on Thursday.

Scientists Warn NASA on Ethics of Space Travel

The US space agency NASA plans to send humans to an asteroid and Mars, eventually. But a group of prominent U.S. scientists says right now, any deep space mission will be too dangerous, based on NASA's minimum safety requirements. And engineering capabilities and understanding of the effects of long-term cosmic radiation exposure will not advance sufficiently within the next five years to change that assessment.
After a study of long-duration space travel, sponsored by NASA, the panel of scientists from the National Academy of Sciences says the space agency should consider ethics while designing standards for future long missions.