01:750:110 Study Guide - Spring 2018, Comprehensive Midterm Notes - Galaxy, Sun, Gravity
Document Summary
Is large enough for its own gravity to make it round: a solar system, sun, planets, moons, rocky asteroids. If the sun is moving away from us, the colors will be red-shifted and the color lines will be in different place: you can calculate the speed of the sun from this. If a star seems wiggly, we see a blue-shift and it is coming towards us: we generally measure the doppler effect from shifts in the wavelengths of spectral lines. If pointed at the sun/moon, it would get fried: extremely smooth mirror, very blurry results, someone made the wrong shape of the mirror. The sun: how does the sun generate energy, e=mc2, matter can be transformed into energy, nuclear fusion. Sun: end in eruptions that blast through corona at 1000 km/s speeds, all these phenomena are related to magnetic fields generated in the convection zone.
