What causes the different colors? What are emission lines in cometary spectra?
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- What are outbursts of comets?
- How has our understanding of comets evolved with space exploration? What are the future grand challenges in comet science?
- What are the polarization properties of light scattered by cometary dust? What can polarimetry tell us about dust grain size and shape?
- What are missions to comets? What was the Giotto mission?
- What is the evidence for past comet showers on Earth and other planets? What are the potential biological implications of comet impacts?
- Have comet impacts affected Earth's history? What was the Cretaceous-Paleogene extinction event?
- How do isotopic ratios compare to those in the Sun and planets?
- How does it influence the orbits of comets and other small bodies?
- Comets Orbits and Dynamics What are comets made of?
- What is the Yarkovsky effect?
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