Galaxies
Identify the type of Galaxy
https://storage.noirlab.edu/media/archives/images/screen/iotw2127a.jpg
Barred Spiral
On the HR Diagram, what does a star's color tell us?
Temperature
What type of body were the first 3 exoplanets found around? Why was this surprising?
Pulsar / Neutron Star; it was believed that planets could only exist around living stars because planets couldn't survive the violent forces of a supernova which was proven false.
Describe what is happening to the universe, and what Physical Phenomena scientists used to determine this (hint: ____ effect)
Hubble Expansion; Doppler Effect
A star is larger than 8 solar masses, and its core was 5 solar masses when it collapsed. What did the star end up as when it died?
Black hole ( core mass > 3 solar masses).
Two planets orbit identical stars. Planet A causes a much deeper transit than Planet B. Which planet is probably larger, and why?
Planet A, most likely had a much larger surface area; blocking more light.
Astronomers found that stars orbit the outer parts of galaxies much faster than expected. What invisible substance did this provide evidence for?
Dark Matter
What is a “failed star” that failed to undergo Hydrogen fusion? What IS it able to fuse?
Brown Dwarf; Deuterium
Which detection method looks for a star's "wobble" caused by an orbiting planet?
The Radial Velocity method
An Elliptical Galaxy contains a) Older and redder stars or b) Larger, bluer, and younger stars
A
A star is 0.1 Solar Masses. Is it a) entirely convective, b) entirely radiative, or c) a combination of both
a) Entirely convective
What are planets that don’t orbit a star called?
Rogue Planets
Describe what causes the irregular shapes of many irregular galaxies and causes bursts of star formation in these galaxies.
Galactic interactions and/or Collisions
Will a very large Blue star or a cool dim red star spend more time on the Main Sequence.
Cool Red Star
What are the 2 main drawbacks of the transit method?
Planets must be directly aligned with the Earth for this to work, biased towards larger planets.