Disclaimer: The following material is being kept online for archival purposes.
Although accurate at the time of publication, it is no longer being updated. The page may contain broken links or outdated information, and parts may not function in current web browsers.
Bubble, Bubble, Toil and Trouble
While our Sun does give us a steady stream of
warmth and light, it also has weather that is turbulent
and dynamic, provoking the cosmic equivalent of winds,
clouds, waves, precipitation, and storms...
One of the most important solar events from Earth's
perspective is the coronal mass ejection (CME), the solar
equivalent of a hurricane. A CME is the eruption of a
huge bubble of plasma from the SunÝs outer atmosphere, or corona...
Coronal mass ejections occur at a rate of a few times
a week to several times per day, depending on how active
the Sun may be. And because of the size of the plasma
clouds they produce, the odds say Earth is going to get hit
by a CME from time to time...
Seeing the Invisible
Auroras are a visible sign of the magnetic mayhem in
our atmosphere, but beyond that, the human eye canÝt
detect much of what we call space weather...
Blackouts, Burnouts, and Bummers
Aside from bright auroras, there are other less benevolent
effects of the connection between Sun and Earth. In fact,
bright auroras are merely a visible sign that the balance
of electrical and magnetic energy in EarthÝs magnetosphere
has been upset...
Measure the Motion of a Coronal Mass
Calculate the velocity and acceleration of a coronal mass
ejection (CME) based on its position in a series of images
from the Large-Angle Spectrometric Coronograph (LASCO)
instrument on SOHO...
NASA Resources for Educators
NASA's Central Operation of Resources for Educators (CORE)
was established for the national and international
distribution of NASA-produced educational materials in