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- He made the most precise observations that had yet been made by devising the best instruments availible before the invention of the telescope.
- Stars' parallax are too small to measure
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- Nature Of Gravity
- Laws of motion
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- First To calculate the orbit of a comet
- First Magnetic charts of the Atlantic
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- Discovered Uranus
- Discovered Uranus' two moons
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- Improving the existing understanding of the universe
- Discovered the cosmos
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- He revealed the presence of a jovian ionosphere and magnetosphere
- He turned the arecibo observatory to a radio astronomical facility
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- A personal voyage
- Space exploration