ACE Studies Solar "Sneezes"
News story originally written on December 14, 1998
Scientists have used the Advanced
(ACE) to measure the temperature of tiny
"sneezes" of solar material called impulsive solar flares.
"These flares are relatively modest, compared to a typical solar flare.
Before ACE, we had to average over a group of them to get a temperature
estimate," said Dr. Joseph Mazur of the Aerospace Corporation, a
contributor to the research.
The Solar Energetic Particle Ionic Charge Analyzer (SEPICA) measures
electrical charge on atoms. Electrons are stripped from atoms at high
temperatures. By measuring the number of missing electrons (the charge),
SEPICA can determine the temperature of the flare
that created the particles.
Shop Windows to the Universe Science Store!
Our online store
on science education, ranging from evolution
, classroom research
, and the need for science and math literacy
You might also be interested in:
It was another exciting and frustrating year for the space science program. It seemed that every step forward led to one backwards. Either way, NASA led the way to a great century of discovery. Unfortunately,...more
The Space Shuttle Discovery lifted off from Kennedy Space Center at 2:19 p.m. EST, October 29th. The sky was clear and the weather was great as Discovery took 8 1/2 minutes to reach orbit for the Unitied...more
A moon was discovered orbiting the asteroid, Eugenia. This is only the second time in history that a satellite has been seen circling an asteroid. A special mirror allowed scientists to find the moon...more
Will Russia ever put the service module for the International Space Station in space? NASA officials are demanding an answer from the Russian government. The necessary service module is currently waiting...more
During a period of about two days in early May, 1998, the ACE spacecraft was immersed in plasma associated with a coronal mass ejection (CME). The SWICS instrument on ACE, which determines unambiguously...more
J.S. Maini of the Canadian Forest Service has referred to forests as the "heart and lungs of the world." Forests reduce soil erosion, maintain water quality, contribute to atmospheric humidity and cloud...more
In late April through mid-May 2002, all five naked-eye planets are visible simultaneously in the night sky! This is includes Mercury which is generally very hard to see because of its proximity to the...more