In order to realistically examine how much cumulative radiation the astronauts would face, the scientists based their research on a 1,000-day crewed mission — 600 days of travel time, 400 days ...

At high doses, cosmic rays can tear through DNA molecules and damage biological tissue. Prolonged exposure to cosmic radiation can increase the risk of cancer, cataracts, and reproductive problems. It ...

SAN FRANCISCO — Astronauts could endure a long-term, roundtrip Mars mission without receiving a worryingly high radiation dose, new results from NASA's Mars rover Curiosity suggest.

Fact check: UV radiation causes sunburns, skin cancer Short explained that a sievert is a "measure of increased risk of ill effects from radiation on the human body." ...

In "ZERO Sievert," set in a fictitious post-apocalyptic part of Russia, players take on the role of a hunter charged with investigating dangerous areas in a bandit-, monster- and radiation-filled ...

* Radiation is measured using the unit sievert, which quantifies the amount absorbed by human tissues. One sievert is 1,000 millisieverts.

Experts measure exposure to ionizing radiation in several ways, but the most current and accepted is based on the sievert, a unit named after R.M. Sievert, a 20 th century Swedish physicist.

An instrument aboard the Curiosity Mars rover during its 253-day trek to Mars revealed that the radiation dose received by an astronaut on a trip there and back alone would be about 0.66 sieverts ...