Check Out UTOPIA
Thu Jan 24, 2013 4:31 am by Admin
Utopia Forum is almost complete and is now ready for all new members and visitors.
The forum is a little different to here as it uses a single page forum which puts all the topics on one page with important threads globally pinned at the top of the page.
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The recent solar minimum, a period characterized by a lower frequency of sunspots and solar storms, ended in 2008 and was the deepest one observed in almost 100 years. Solar minimums and maximums are the two extremes of the sun's 11-year activity cycle.
While sunspots were first observed by Chinese astronomers in 800 B.C., systematic observations of sunspots through the telescope started around 1600. In 1843, a German astronomer Samuel Schawbe first discovered that the number of sunspots wax and wane in a cyclic fashion with an 11-year periodicity. This is called the sunspot cycle or the solar cycle.
The solar cycle (Solar Magnetic Activity Cycle) is a periodic change in the amount of irradiation from the sun that is experienced on Earth. It has a period of about 10.7 years, and is one component of solar variation, the other being aperiodic fluctuations.
Solar minimum is the period of least solar activity in the solar cycle of the sun. During this time, sunspot and solar flare activity diminishes, and often does not occur for days at a time. It is a safer time to travel through space, but a less interesting time to watch polar skies.
At a maximum, the sun is peppered with sunspots, solar flares erupt, and the sun hurls billion-ton clouds of electrified gas into space. It's a good time for sky watchers who enjoy auroras, but not so good for astronauts who have to be wary of radiation storms. Power outages, satellite malfunction and communication disruptions, and GPS receiver malfunctions are just a few of the things that can happen during a solar maximum.
NASA scientists noted during 2008-2009 that the Sun was undergoing a "deep solar minimum," stating: "There were no sunspots observed on 266 of [2008's] 366 days (73 percent). As of September 14, 2009 there were no sunspots on 206 of the year's 257 days (80 percent),"
NASA's teleconference would focus on the first computer model that explains the recent period of decreased solar activity during the sun's 11-year cycle.
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