|Space travel changes astronauts' DNA
Scientists found a new risk to space travel. They found that our DNA can change when going into space. This change could increase the risk of astronauts getting cancer. The scientists did research on the blood of 14 NASA astronauts who flew on the Space Shuttle between 1998 and 2001. They gave blood ten days before going into space and three days after returning to Earth. Professor David Goukassian said: "Astronauts work in an extreme environment where many factors can result in…mutations." He added: "Space radiation…means there is a risk that…mutations could develop."