Cosmology
What is the Theory of Inflation?
Rather than the universe getting slowly bigger, it got instantly as large
Why is this dark matter considered “dark”?
We cant see it
Which two factors influence the magnitude of a star?
Size and temp
What do Saturn’s rings appear to consist of?
ice, rocks, debris
Why are larger units necessary when discussing astronomy?
Space is massive.
What do recent calculations show with regards to the universe’s expansion
Its expanding at an increasing rate
What is theorized to be at the center of the Milky Way galaxy?
a supermassive blackhole, sagittarius A
Hot stars appear to be what color? Cooler stars appear to be what color?
Hot = Blue Cool = Red
What is the name of Neptune’s largest moon?
triton
Why is Einstein’s special relativity so important?
United ideas we thought were separate
What’s the difference between physical cosmology and philosophical cosmology?
Physical is how the universe got where it is philosophical is why
What is the name of the cluster of galaxies to which the Milky Way belongs?
local group
What two characteristics of stars do H-R diagrams display?
Luminosity and temp
What is the Kuiper Belt?
Disc shaped region beyond the orbit of neptune home to comets and asteroids
what color has more energy, red or blue?
Blue.
When did Einstein’s equations first predict a dynamic universe?
1916
What contributions did Lord Rosse and Hubble make to astronomy with regards to galaxies?
they're first people to look outside of our galaxy, realize that there are other galaxies
What factor has the largest impact on a star’s evolutionary path?
Mass
How do Jupiter and the Sun work together to trap asteroids?
The pull from jupiter and the sun are balanced in some spots, so they kind of just float around in those areas
Who is credited with discovering that white light is not fundamental?
Newton
When was the term “cosmology” first used?
In 1656 the glossographia
Approximately how much of the Milky Way is theorized to be dark matter?
95%
On average, how long is the sunspot cycle?
11 years
What are the three types of meteorites?
Stoney, iron, stoney-iron
What is the Doppler Effect.
Perceived change in the frequency of a wave when the source is moving