The $488 million observatory is set to launch at the end of this month on a two-year mission to map the entire celestial sky.
Following a checkout period lasting one month, the observatory – which measures 8.5 feet tall, 10.5 feet across, and weighs 1 ...
American space agency NASA launched on March 11 the Spectro-Photometer for the History of the Universe, Epoch of Reionization ...
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