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Please help please and thank you ❤
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18 votes
Please help please and thank you ❤

Please help please and thank you ❤-example-1
User Nikodz
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5.1k points

1 Answer

7 votes
1. Optic
2. Electromagnetic waves
3. Speed of light
4. Hubble Space telescope
5. Electromagnetic radiation
6. Reflecting telescope
7. Active and adaptive
8. Radio telescope
9. Refracting telescope
10. Observatory
User Michael Sorens
by
4.9k points
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