Look at the timeline excerpt from Chapter Four of Windows to the Universe: Revolutions in Astronomy.2013-2016: Extensive testing is conducted on all components.Why did the author most likely include a range of years in this entry?
Answer
A
to show that testing was a lengthy and ongoing process
B
to imply there were many technical failures during testing
C
to compare JWST’s testing phase to that of other space telescopes
D
to emphasize that all testing was completed at the same time in 2016