AST101H1 Chapter Notes - Chapter 7.1-7.3: Liquid Hydrogen, Oort Cloud, Kuiper Belt

• School: UTSG
• Department: Astronomy and Astrophysics
• Course: AST101H1
• Professor: Bryan Gaensler

Document Summary

Galileo"s teles(cid:272)opi(cid:272) o(cid:271)se(cid:396)(cid:448)atio(cid:374)s (cid:373)ade a (cid:374)e(cid:449) e(cid:396)a i(cid:374) ast(cid:396)o(cid:374)o(cid:373)(cid:455) (cid:449)he(cid:396)e the su(cid:374), Moon, and planets could be studied as worlds, rather than just as lights. O(cid:373)eti(cid:373)es (cid:449)e stud(cid:455) (cid:449)o(cid:396)lds i(cid:374)di(cid:448)iduall(cid:455), like (cid:449)he(cid:374) (cid:449)e look at ma(cid:396)"s geog(cid:396)aph(cid:455) or the atmospheric structure of jupiter. Other times, we compare the worlds to each other, studying them through similarities and differences. Astronomers use the term planetology when also studying moons, asteroids, comets and planets. Without a telescope, you will not be able to see much of the solar system. The sun and planets are all pretty small compared to the distances between them. Compared to the rest of the solar system, the planets look like bits of light. Even the sun would just look like a small bright dot. To picture the solar system, we need to magnify the sizes of the planets about a thousand times.