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Be careful up there.


The story "Stormy storm·y  
adj. storm·i·er, storm·i·est
1. Subject to, characterized by, or affected by storms; tempestuous.

2.
 weather" (SN: 1/13/01, p. 26) carries some statements that I think need clarification: "If high-energy protons happen to strike astronauts outside the shelter of their spacecraft spacecraft

Vehicle designed to operate, with or without a crew, in a controlled flight pattern above Earth's lower atmosphere. Since streamlining is not needed in the high vacuum of this environment, a spacecraft's shape is designed according to its mission (see
, they could be severely injured in·jure  
tr.v. in·jured, in·jur·ing, in·jures
1. To cause physical harm to; hurt.

2. To cause damage to; impair.

3.
" or even killed. "Because the ionosphere ionosphere (īŏn`əsfēr), series of concentric ionized layers forming part of the upper atmosphere of the earth from around 30 to 50 mi (50 to 80 km) to 250 to 370 mi (400 to 600 km) where it merges with the magnetosphere, the region  absorbs much of the protons' energy, they don't pose a threat to people or electrical systems on Earth."

However, the National Oceanographic and Atmospheric Administration's Space Weather Scales describe the biological effect of solar storms Solar storm can refer to:
  • Geomagnetic storm - the interaction of the Sun's outburst with Earth's magnetic field
  • Coronal mass ejection (CME)
  • Solar flare
 not only for the space program, but also for aviation. While for people on Earth there may not be significant biological danger, for those in aircraft, the picture is more complex. The extent of exposure of crew and passengers is a function of a number of factors including the altitude and latitude of an aircraft. Under NOAA's scale of "Strong, Severe or Extreme" radiation-storm conditions, biological effects may be anticipated for some crew and passengers.

Mardi Crane

Arlington, Vt.
COPYRIGHT 2001 Science Service, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2001, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Publication:Science News
Date:Mar 3, 2001
Words:156
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