article_snippet: On long-haul flights, your exposure to radiation from cosmic rays, energetic particles from space, is higher .
article_snippet: While on international flights, you're exposed to more than a tiny amount of radiation from cosmic rays, which are energetic particles from space, mostly made up of protons.
article_snippet: The longer the flight and the higher and closer the plane flies to the North Pole, the greater the dose of radiation that crew and passengers alike will experience.
article_snippet: However, the CDC does admit that experts are still not sure of the health risks associated with cosmic radiation and because you cannot see or feel it, often people do not just precisely when people are being exposed.
highlights_snippet: Cosmic radiation is also higher when in flight and closer to the North Pole .