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are observing the Sun: SOHO, TRACE, STEREO

These satellites look at the Sun in all

different kinds of light (ultraviolet, visible,

infrared, X-ray) to see everything that is

going on

Many cameras on telescopes need to use

a caronagraph, where a disk is used to block

out the Sun’s surface so we can see all the dim

stuff that the Sun’s brightness would drown out