Bright , active regions on the Lord’s Day have meld to look something likeJack Skellington ’s face on October 8 . These spooky facial characteristic are field that emit more light and zip – the marker of intense magnetic activity hovering in the Sunday ’s air , or the corona .
When we await at the sunshine in stock camera photos or with the naked middle ( not recommended ) , we typically see a xanthous disk ; sometimes it see reddish if it ’s near the skyline . The Lord’s Day really emits light in all colors , but since yellow is the brightest , that ’s what we see . Ground and place - based telescope can observelight in many different wavelengthsfar beyond the ranges seeable to us . start from the sun ’s Earth’s surface on out , the wavelength observed byNASA ’s Solar Dynamics Observatory ( SDO)range from 4500 to 131 angstrom – from the surface ( or photosphere ) all the way to the hot textile in a flare .
The ghostly smile pictured above is a composite that blends together image captured by SDO of two set of wavelengths at 171 and 193 angstroms , which are typically discolor as gold and yellow . A wavelength of 171 angstrom unit shows the St. Elmo’s fire when it ’s subdued , as well as giant magnetic arcs called coronal loops . A wavelength of 193 shows a slighter hotter region of the corona and much hot material of a solar flash . you’re able to see the individual imageshere .
Below , the sun is imaged on the same day in 304 angstrom extreme ultraviolet light . lighting at this wavelength is emitted from a layer of the sun ’s atmosphere called the chromosphere ( just above the photosphere ) and the transition realm where the temperature rapidly rises :
And here again in 335 angstrom extreme ultraviolet Light Within . This wavelength shows hotter , magnetically participating regions in the corona :
image : NASA / GSFC / SDO ( top ) , NASA / SDO ( halfway , bottom ) viaNASA ’s Goddard Space Flight Center
