From its position in geosynchronous orbit, the SDO keeps a steady eye on the sun, observing solar variations and the space weather they spawn impact conditions on Earth. In this case, SDO was observing the sun in a high ultraviolet wavelength, hence the electric yellow hue. Though the images of the partial solar eclipse are beautiful, they also have an important research function. Having an object pass in front of the sun like that provides researchers on the ground with information about the characteristics of the instruments aboard SDO. That helps them to correct any problems with the observatory and improves the quality of the data SDO gathers.