Earth-bound observers see only one side of the moon because it is tidally locked to our planet, meaning its orbital period is the same as its rotation around its axis.
The images of the far side of the moon, which wasn’t seen by humankind until a Soviet mission in 1959, will be captured about twice a year by Nasa’s observatory, which is primarily monitoring solar winds.
“It is surprising how much brighter Earth is than the moon,” said Adam Szabo, a scientist at Nasa’s Goddard Space Flight Center. “Our planet is a truly brilliant object in dark space compared to the lunar surface.”
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