A gigantic sunspot - nearly 80,000 miles across - can be seen on the sun in this image taken by NASA's Solar Dynamic Observatory on October 23, 2014. Sunspot Number Daily, monthly and 13-month smoothed sunspot numbers for the past 13 years, and 12-month ahead predictions. NASA image and animation by Robert Simmon and Jesse Allen, based on data from Marshall Space Flight Center Solar Physics Group and the SOHO Michelson Doppler Imager Project. Click "NEXT" or "PREV" for a "slideshow" of all the images on the page. By studying x-ray images scientists have discovered that the bright parts of the x-ray corona are associated with sunspots and that, as we have seen in the eclipse photos, the shape of the corona (as seen in x rays or white light) changes with the sunspot cycle.
Astronomy Picture of the Day . The sun emitted a significant solar flare, peaking at 5:40 p.m. EDT on Oct. 24, 2014. Yearly mean and 13-month smoothed monthly sunspot number since 1700. Along the way, it may answer a long-standing mystery of what heats up the Sun’s atmosphere, the corona.
The gigantic sunspot in the upper left of this image is about 50,000 miles (80,000 km) long and was observed on the sun by NASA's Solar Dynamics Observatory on Nov. 3, 2011. Solar flares are powerful bursts of radiation. The Space Weather Media Viewer is a Flash-based interactive tool kit built to support the major public outreach initiatives of NASA's Sun-Earth Connection
"On a daily or weekly basis the sunspot number can fluctuate wildly, but when we average the counts over a month they agree fairly well with our predictions." The sequence of seven images in this animation shows sunspots as viewed by NASA's Curiosity Mars rover from June 27 to July 8, 2015. NASA Headquarters. New Sunspot Cycle Begins This image originally appeared in the NASA Earth Observatory story New Sunspot Cycle Begins .
From Mars, the rover was in position to see the opposite side of the Sun from the side facing Earth during this period. North and South hemispheric sunspot numbers (13-month smoothed values) over the last 6 cycles. To display a larger image, just click the thumbnail.
Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can … SDO is designed to help us understand the Sun's influence on Earth and Near-Earth space by studying the solar atmosphere on small scales of space and time and in many wavelengths simultaneously. Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. On December 3 rd, 2018 the second Miniature X-Ray Solar Spectrometer, MinXSS-2, was launched. NASA's Solar Dynamics Observatory, which watches the sun constantly, captured images of the event. Monthly and 13-month smoothed sunspot numbers over the last 6 cycles. Discover the cosmos! An eruption from the surface of the sun is conspicuous in the lower left portion of this July 6, 2015, image from NASA's Earth-orbiting Solar Dynamics Observatory (SDO). [more images from SOHO] "These high sunspot counts are not unexpected," says Dr. David Hathaway, a solar physicist at NASA's Marshall Space Flight Center in Huntsville, Alabama. It originates from a location on the surface where NASA's Curiosity Mars rover had been tracking a sunspot …
To print, click the print icon in the top right-hand corner of the thumbnail. MinXSS-2 is a NASA CubeSat designed to study the soft X-ray photons that burst from the Sun during solar flares.
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