Cosmic rays may damage the brains of astronauts

World / Science & Health May 3, 2015

Cosmic rays may damage the brains of astronauts

Researchers said on Friday that long-term exposure to galactic cosmic rays, which permeate space, may cause dementia-like cognitive impairments in astronauts during any future round-trip Mars journey, expected to take at least 2½ years. In a NASA-funded study, mice exposed to highly energetic charged particles ...

Spacecraft spots possible Pluto polar cap

World / Science & Health Apr 30, 2015

Spacecraft spots possible Pluto polar cap

NASA's Pluto-bound New Horizons spacecraft has spotted surface features on the icy world, including a possible polar cap, images released on Wednesday show. With 60 million miles (97 million km) left to go before its July 14 encounter, New Horizons already has been able to ...