From april 24 to 26, this lone active region on the sun with its tangled magnetic field lines swaying and twisting above it put on a fiery display for our solar dynamic observatory. the charged particles spinning along these field lines illuminate them. the region did not erupt with any significant solar storms, although it still might…
to learn more about how we study solar activity, visit: www.nasa.gov/sdo
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318,811 1,443May 2018
Great ball of fire! ☀️ the sun's rotation brought a new active region into view, revealing the dynamic arches and twisting streams of its magnetic field on oct. 10-11. new active regions are becoming more of a rare sight, as the sun is currently approaching solar minimum—the point of the 11-year solar cycle when activity is most reduced. the video shows images taken in a wavelength of extreme ultraviolet light and covers 33 hours made from over 500 frames (i.e., one frame selected every 4 minutes). viewed by our solar dynamics observatory, we seek to learn more about our closest star that will help us understand where the sun's energy comes from, how the inside of the sun works, how energy is stored and released in the sun's atmosphere and much more.
credit: nasa/solar dynamics observatory #nasa#space#solarsystem #sun#ultraviolet#magneticfield#star#atmosphere#photooftheday#solar#sdo#light#science#uv#uvlight#picoftheday#fire#greatballoffire#lit#astronomy
Over the course of just one day, a tiny active region on the sun grew to became almost as large as its many-days-old neighbor. seen from aug. 23-24, 2018, these active regions are areas of intense magnetism and are often the source of solar storms.
we use our solar dynamics observatory to understand the sun's influence on earth and near-earth space by studying the solar atmosphere in many wavelengths simultaneously. this allows us to better understand the solar variations that influence life on earth and humanity's technological systems by looking for solar wind, energetic particles, and variations in the solar irradiance that lead to better predictions of space weather events.
Sometimes, the surface of our sun seems to dance. in the middle of 2012, for example, nasa's sun-orbiting solar dynamic observatory spacecraft imaged an impressive prominence that seemed to perform a running dive roll like an acrobatic dancer. the dramatic explosion was captured in ultraviolet light in the featured time-lapse video covering about three hours. a looping magnetic field directed the flow of hot plasma on the sun. the scale of the dancing prominence is huge -- the entireearth would easily fit under the flowing arch of hot gas. a quiescent prominence typically lasts about a month, and may erupt in a coronal mass ejection (cme) expelling hot gas into the solar system. the energy mechanism that creates a solar prominence is still a topic ofresearch. unlike 2012, this year the sun's surface is significantly more serene, featuring fewer spinning prominences, as it is near the minimum in its 11-year magnetic cycle.
Nasa's solar dynamics observatory (sdo) scientists used their computer models to generate a view of the sun's magnetic field on august 10, 2018. the bright active region right at the central area of the sun clearly shows a concentration of field lines, as well as the small active region at the sun's right edge, but to a lesser extent. magnetism drives the dynamic activity near the sun's surface.
Nasa image of the day is amazing!! nasa's solar dynamics observatory (sdo) scientists used their computer models to generate a view of the sun's magnetic field on august 10, 2018. the bright active region right at the central area of the sun clearly shows a concentration of field lines, as well as the small active region at the sun's right edge, but to a lesser extent. magnetism drives the dynamic activity near the sun's surface.
sdo is managed by nasa's goddard space flight center, greenbelt, maryland, for nasa's science mission directorate, washington. its atmosphere imaging assembly was built by the lockheed martin solar astrophysics laboratory (lmsal), palo alto, california.
Our solar dynamics observatory spacecraft views our sun in ten different wavelengths because each wavelength reveals different solar features. this view of the sun, captured on sept. 21, 2018, uses two images taken at virtually the same time but in different wavelengths of extreme ultraviolet light.
the red-tinted image, which captures material not far above the sun's surface, is especially good for revealing details along the edge of the sun, like the small prominence at the ten o'clock position.
the brown-tinted image clearly shows two large coronal holes (darker areas) as well as some faint magnetic field lines and hints of solar activity (lighter areas), neither of which are apparent in the red image. this activity is occurring somewhat higher in the sun's corona. in a way it is like peeling away the layers of an onion, a little at a time.
our missions to learn more about our closest star will help us understand where the sun's energy comes from, how the inside of the sun works, how energy is stored and released in the sun's atmosphere and much more.
credit: nasa/gsfc/solar dynamics observatory