Editing Generation ship (section)

===Cosmic rays===
{{Main|Health threat from cosmic rays}}

The radiation environment of deep space is very different from that on the Earth's surface, or in low Earth orbit, due to the much larger influx of high-energy [[galactic cosmic rays]] (GCRs). Like other [[ionizing radiation]], high-energy cosmic rays can damage DNA and increase the risk of cancer, cataracts, and neurological disorders.<ref>{{cite web|url=http://spaceflight.nasa.gov/spacenews/factsheets/pdfs/radiation.pdf |archive-url=https://web.archive.org/web/20041030191015/http://www.spaceflight.nasa.gov/spacenews/factsheets/pdfs/radiation.pdf |url-status=dead |archive-date=2004-10-30 |title=NASA Facts: Understanding Space Radiation |access-date=2010-04-01}}</ref>