Find out everything there is to know about cancer and stay updated on the latest cancer research with the comprehensive articles and informative features at LiveScience.com. Learn more about this potentially fatal disease as scientists and doctors continue to make amazing discoveries about cancer.
Every second, every square meter of Earth is bombarded by 10 billion photons born beyond the Milky Way, according to a new study. That may sound like a lot, but it's just 10 trillionths of the total number that bathe every square meter of the planet.
Astronauts who fly far beyond the Earth are more likely to experience heart problems than those whose missions are closer to home — and the cause may be deep-space radiation, a new study finds.