Summary
The speaker tells us that in the past, every star in the galaxy was counted by hand!!
With technology evolution, and then telescopes were invented. However, it was tough to use a telescope and a camera simultaneously, it’s necessary to get evidence, astronomers couldn’t just walk away from the camera, they had to stay there all night shivering in the cold.
By advancing technology, how to operate telescopes has really changed. You don’t even need to go to telescopes anymore, you can run it with your laptop, and send commands from your laptop telling the telescope where to point when to open and close the shutter, what pictures you want it to take of the universe. Furthermore, with digital data, the telescope can look for anything that’s changed. It means to be able to compare old and new observations automatically and to be ready to learn some incredible new things about the universe.
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