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Bruce Murray Space Image Library

Mercury transiting the Sun in multiple wavelengths

Mercury transiting the Sun in multiple wavelengths
Mercury transiting the Sun in multiple wavelengths Between ~0200 and 0800UT on December 12, 2013, the Extreme UltraViolet Imager (EUVI) camera aboard the STEREO-A spacecraft captured Mercury transiting across the disk of the Sun. Most of the images taken by this instrument are the 195-Angstrom wavelength, which corresponds to a coronal temperature of about 1.5 million degrees, but it can also acquire images at 171A, 304A, and 284A wavelengths, shown here. You can find a full set on the NRL SECCHI/STEREO website. NASA / STEREO