SPACE RADIATION: According to a new study just published in the
research journal Space Weather, astronauts face a growing peril from
space radiation. Rising fluxes of cosmic rays inside the solar system
place increasingly strict limits on the amount of time explorers can
safely travel through interplanetary space. Visit http://spaceweather.com for more information and links to the complete study.
AURORA WATCH: Arctic sky watchers should be alert for auroras this
weekend. Earth is passing through a fast-moving stream of solar wind,
and this is causing geomagnetic unrest around the poles. Geomagnetic
storm alerts are available from http://spaceweathertext.com (text) and http://spaceweatherphone.com (voice).