Pronunciation of the English word orbital.
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1. | After much debate, it was decided that to be a planet in our solar system, an object must be in orbit around the Sun, have enough mass so that it has become round in shape due to its own gravity, and have cleared out its orbital path around the Sun. | |
2. | Neptune was discovered because Uranus did not follow the orbital path predicted by astronomers. Astronomers assumed that the gravitational pull of another object was affecting the orbit of Uranus. This led them to look for, and find, Neptune. | |
3. | Although others had floated the idea of orbital telescopes, Spitzer’s 1946 paper entitled “Astronomical advantages of an extra-terrestrial observatory” described in detail the scientific advantages of placing a telescope in space. |