Home » Good News in english, News in English of the world, University News

The Sun, our beautiful Star: Three Years of Solar Dynamics Observatory Images VIDEO

Inserito da

In the three years since it first provided images of the sun in the spring of 2010, NASA’s Solar Dynamics Observatory has had virtually unbroken coverage of the sun’s rise toward solar maximum, the peak of solar activity in its regular 11-year cycle. This video shows those three years of the sun at a pace of two images per day. SDO’s Atmospheric Imaging Assembly captures a shot of the sun every 12 seconds in 10 different wavelengths. The images shown here are based on a wavelength of 171 angstroms, which is in the extreme ultraviolet range and shows solar material at around 600,000 kelvins (about 1.08 million F). In this wavelength it is easy to see the sun’s 25-day rotation as well as how solar activity has increased over three years. During the course of the video, the sun subtly increases and decreases in apparent size. This is because the distance between the SDO spacecraft and the sun varies over time. The image is, however, remarkably consistent and stable despite the fact that SDO orbits Earth at 6,876 mph and Earth orbits the sun at 67,062 mph. Such stability is crucial for scientists, who use SDO to learn more about our closest star. These images have regularly caught solar flares and coronal mass ejections in the act, types of space weather that can send radiation and solar material toward Earth and interfere with satellites in space. SDO’s glimpses into the violent dance on the sun help scientists understand what causes these giant explosions — with the hopes of some day improving our ability to predict this space weather. News from: NASA’s Goddard Space Flight Center. – http://goodnews.ws/


Advertise your green company with Good News. Click here: ECO partners

Support the only e-magazine dedicated to the good news with your donation ≈ a € x a smile

Editing Tel. +39574 442669 – Publicity Tel. +39574 1746090

Save the Children lotta per i diritti dei bambini in tutto il mondo

Acquista subito i tuoi libri: consegna gratuita se spendi almeno 19 €!