4) Why Kuiper belt and Oort cloud is located where it is now?
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- 2. The destructive "Tunguska Event" of 1908 seems to have been due to an airburst by a modest-sized asteroid a direct impact on land by a large asteroid an ocean impact by a comet a nearby supernova explosion Astronomers have determined that the probability of a significant asteroid impact on Earth during your lifetime is about the same as the probabilty that you'll win the lottery. True FalseThe Solar Nebula model introduces the concept of ‘frost line’. Where are asteroids and comets found with respect to this frost line? How is their location connected to their composition?The planet Uranus was discovered in 1781, and Neptune, the next planet outward from the Sun, was discovered in 1846. Imagine you're an astronomer in 1846, and you start wondering if there's another planet out beyond Neptune. You decide to try and discover its existence using the same method that was used for Neptune. How will you do this? Group of answer choices You'll recruit a large number of astronomers to use their telescopes to carefully scan the sky in directions that are far from the ecliptic. The regions around the north and south celestial poles will probably be the best "hunting grounds" for the new planet. You'll examine Uranus and Neptune very carefully, on every clear night, for several years, to see if you can find any evidence that sunlight has been reflected off of the `new' planet, then off of Uranus or Neptune, before arriving on Earth. On rare occasions when Neptune passes in front of the Sun, as seen from Earth, you'll look carefully at the Sun (with a safe…
- If Neptune's clouds have a temperature of 60 K, at what wavelength will they radiate the most energy?There is one part to this question. I need to know the days. Thank you!For the following light curve, which of the answers best illustrates the orientation of the exoplanet and its host star during the dip at Time 3? Light curve Time 1 Time 2 Time 3 Time 4 Choose one: А. O C. D. Intensity B.