APOD: 2020 August 19 – The Sun Rotating
The Sun Rotating
Video Credit: SDO, NASA; Digital Composition: Kevin M. Gill
VIDEO
Explanation: Does the Sun change as it rotates? Yes, and the changes can vary from subtle to dramatic. In the featured time-lapse sequences, our Sun -- as imaged by NASA's Solar Dynamics Observatory -- is shown rotating though an entire month in 2014. In the large image on the left, the solar chromosphere is depicted in ultraviolet light, while the smaller and lighter image to its upper right simultaneously shows the more familiar solar photosphere in visible light. The rest of the inset six Sun images highlight X-ray emission by relatively rare iron atoms located at different heights of the corona, all false-colored to accentuate differences. The Sun takes just under a month to rotate completely -- rotating fastest at the equator. A large and active sunspot region rotates into view soon after the video starts. Subtle effects include changes in surface texture and the shapes of active regions. Dramatic effects include numerous flashes in active regions, and fluttering and erupting prominences visible all around the Sun's edge. Presently, our Sun is passing an unusually low Solar minimum in activity of its 11-year magnetic cycle. As the video ends, the same large and active sunspot region previously mentioned rotates back into view, this time looking different.
Family size and structure are rapidly changing in Israeli society, Taub
study finds Although the marriage rate here is similar to that in other
high-income countries, Israel is more similar to neighboring developing
countries in terms of birthrate than to high-income ones. By JUDY
SIEGEL-ITZKOVICH APRIL 18, 2024 05:57 Updated: APRIL 18, 2024 08:42
-
https://www.jpost.com/israel-news/article-797575
Hace 22 horas
No hay comentarios:
Publicar un comentario