CRCT Question. Which planet is almost identical in size to Earth ? Mars Neptune Moon Venus. Week at a Glance. Monday: Sun Notes #1 Tuesday: Sun Notes #2 Wednesday: Workday Thursday: Telescope Notes Friday: Workday Next Week: Wednesday: QUIZ Thursday: Project DUE. Big Bang
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Which planet is almost identical in size to Earth?
Monday: Sun Notes #1
Tuesday: Sun Notes #2
Thursday: Telescope Notes
Thursday: Project DUE
1. size of the star – supergiant, giant, medium, white dwarfs, neutron stars.
2. color - surface temperature - Coolest are red, then orange, yellow (our Sun), blue, white
3. brightness – magnitude
a. apparent magnitude– close stars look brighter
b. absolutemagnitude– actual light
1. Star sizes
2. Determined by surface temperature.
i. Absolute magnitude is how much light is actually given off by a star.
ii. Apparent magnitude is how bright a star appears to be due to how close or far away it is.
Two astronomers discovered a relationship between the absolute magnitude (real brightness) of a star and its surface temperature. They plotted the data on a graph.
Stars seemed to naturally group together
They discovered that stars grouped by type and during their lifetimes would move from one place on the graph to another.
As our sun ages, it will move to a giant star to a white dwarf.