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Description: Aurora are colorful lights in the night time sky primarily appearing in Earth's polar regions. But what causes them? The culprit behind aurora is our own Sun and the solar plasma that is ejected during a magnetic event like a flare or a coronal mass ejection. This plasma travels outward along with the solar wind and when it encounters Earth's magnetic field, it travels down the field lines that connect at the poles. Atoms in the plasma interacts with atoms in Earth's upper atmosphere. This reaction produces the colorful lights we call aurora.
Thanks to NASA.gov
Description: UNBSSI pursued in the period of time from 1997 to 2005 a satellite project "World Space Observatory/ultraviolet" to be implemented by the Russian Space Agency and European partners. This happened long time ago. However, since than, WSO/UV has been developed by Russia:
http://wso.inasan.ru/
By its potential, the WSO-UV mission is similar to the Hubble Space Telescope (HST), though it exceeds HST in spectroscopic capabilities.
A geosynchronous orbit with an inclination of 51.8 degrees has been chosen. For this orbit the effects of the radiation belts will be negligible and the observing efficiency high. The figure at right illustrates the trace of the geosynchronous orbit.
Description: Something big is happening on the sun. The sun's global magnetic field is about to flip, a sign that Solar Max has arrived. The sun's magnetic field changes polarity approximately every 11 years. It happens at the peak of each solar cycle as the sun's inner magnetic dynamo re-organizes itself. The coming reversal will mark the midpoint of Solar Cycle 24. Half of 'Solar Max' will be behind us, with half yet to come.
Credit: here
viewDescription: Massive solar eruptions take aim at our high-tech society. 93 million miles away... an angry sun vents its rage. Dark regions, called sunspots, appeared unexpectedly on its surface... a sign of rising tension within. It had been three and a half years since the sun last erupted in fury...at the peak of an 11-year cycle of solar flare-ups.
Description: April 21, 2013 marks the three-year anniversary of the Solar Dynamics Observatory (SDO) This video highlights just some of the amazing events witnessed in SDO's second year.
Noteworthy events that appear briefly in the main sequence of this video:
(a) 00:30;24 Partial eclipse by the moon; (b) 00:31;16 Roll maneuver; (c) 01:11;02 August 9, 2011 X6.9 Flare, currently the largest of this solar cycle; (d) 01:28;07 Comet Lovejoy, December 15, 2011;
(e) 01:42;29 Roll Maneuver; (f) 01:51;07 Transit of Venus, June 5, 2012; (g) 02:28;13 Partial eclipse by the moon;
Credit: NASA/Goddard Space Flight Center Scientific Visualization Studio here
Description: April 21, 2012 marks the two-year anniversary of the Solar Dynamics Observatory (SDO) This video highlights just some of the amazing events witnessed in SDO's second year.
Credit: NASA/Goddard Space Flight Center Scientific Visualization Studio
Description: Something unexpected is happening on the sun. 2013 is supposed to be the year of Solar Max, the peak of the 11-year sunspot cycle. Yet 2013 has arrived and solar activity is relatively low. Sunspot numbers are well below their values in 2011, and strong solar flares have been infrequent for many months.
Thanks to NASA Science News
Description: A medium-strength solar flare exploded on the Sun's lower right hand side expelling light and radiation July 19, 2012. This beautiful dazzling magnetic display was trapped on film by NASA's Solar Dynamics Observatory (SDO) and released recently.
Thanks to Science World Report
Description: Solar cycle (dynamo) simulation selected as an exhibit for Education and Public Outreach purposes at NASA’s Scientific Visualization Studio and featured in SDO pre-launch outreach videos
Thanks to NASA Scientific Visualization Studio