Types of Galaxies
What is barred spiral
Location of our solar system in the milky way galaxy
What is the spiral arms
used to determine the size of our solar system
law that measures the distances of galaxies and their velocity
What is Hubble's law [V=Ho x D or D=V/Ho]
stars w/i a certain range of surface temperature that pulsate
What are cephoid variable stars
What is elliptical galaxy
Most of the stars in the Milky Way are in this part of the galaxy
What is the disk
used to determine distances of stars up to 200 light yrs away
What is parralax
galaxies with spectral lines that are shifted to longer wavelengths are
What is moving away from us
What is dark matter
Galaxy that is experiencing active star formation (2 answers)
What is spiral and irregular
What part of the galaxy has no active star formation
What is the halo
an object whose luminosity we can determine without measuring its distance
What is a standard candle
The recession velocity of Galaxy A is 3 times smaller than that of Galaxy B, so Galaxy A is
These stars are better for measuring large distances
what is high luminosity stars
In spiral galaxies active star formation occurs in the....
What is the spiral arms
Best way to determine the mass of the galaxy
What is using the orbital speed of stars
Star A and Star B are the same type of star. Star B is 25 times fainter than Star A, Star B is how many times farther away than star A
What is 5 times farther away
Distance of a galaxy with a velocity of 300 Km/s if Ho is 30 km/s
What is 10 Km
Where is the center of the universe
What is there is no center
What you would expect to see in active star formation regions of galaxies (2 answers)
What is dusty molecular clouds and blue main sequence stars
What astronomers use to map the distribution of gas and dust in the milky way
What is 21 cm emission line from atomic hydrogen
What is cephoid variable stars
How can Hubble's law be interpretated in regards to the universe
What is the Universe is expanding