Space Flashcards
1
Q
How far is a light year?
A
9.46x10^15 M
2
Q
How far roughly are our stars away from us?
A
5 light years +
3
Q
What’s the order of the scale of our universe?
A
Planet –> solar system –> sun’s neighbors –> galactic realm –> Universe
4
Q
How do you calculate the distance of something with the use of variable stars?
A
Observe it’s brightness (luminosity)
Measure how long it takes to go back to it’s highest brightness (it’s period)
Find the radiation flux from the star at the earth
Calculate d using the Luminosity equation
5
Q
What’s important to remember about a standard candle?
A
It has a known luminosity
