The original Hubble Deep Field truly showed us what the Universe looks like.
When you collect just a single photon at a time, many of them will be hot pixels, cosmic rays,instrument noise, etc. But when you build up a high-enough signal-to-noise ratio, you can identify what actually is a real object, like a distant galaxy, and what's just random noise.They examined a region of sky that was seemingly empty: with no bright, nearby stars or galaxies.... [+]
region of space and seeing what showed up. The answer was thousands of galaxies, revealing what our distant Universe looks like for the very first time. While for many of us, it feels like yesterday, this image is now over 25 years old.When all the data was collected, this is what they saw.... [+] region of the sky in the southern celestial hemisphere to construct a second Hubble Deep Field. The results were just as spectacular.These Hubble Deep Field images revolutionized our view of the Universe.... [+]
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