Science: Brief Danger

Before the U.S. exploded a nuclear bomb high over the Pacific early this summer, famed Physicist James Van Allen predicted that the blast would create a globe-girdling belt of dangerous radiation. Last week data from orbiting Injun I satellite proved him correct. The new belt is 200 to 500 miles high, just a little closer to earth than the permanent belt named after Discoverer Van Allen. But its intensity is waning, and by the end of a year it will be almost undetectable.


Want the full story?

Subscribe Now


Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!