What are comet ephemerides? What are comet magnitudes?
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- Did Comet Shoemaker-Levy 9 have fragments before its impact with Jupiter? What are the tidal forces on comets near the Sun or planets?
- What are the sources of organic molecules on early Earth?
- What is C/2019 Q4 (Borisov)? How does the size of a comet's nucleus relate to its brightness?
- How does it influence the orbits of comets and other small bodies?
- How are interstellar comets detected? What are the properties of interstellar comets?
- What are the inspiring aspects of comets that continue to fascinate humanity?
- What causes the different colors? What are emission lines in cometary spectra?
- What are the deuterium-to-hydrogen (D/H) ratios in comets and terrestrial water? What are the implications of these ratios for the origin of Earth's water?
- What is the uncertainty in comet predictions? What are the dynamical classifications of comets?
- What factors affect a comet's visibility from Earth?
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