Week 21: Distance to Galaxies and Hubble's Law

What is used to find the distance to nearby stars using trigonometry?

What is based on a parallax law and is used to find the distance to stars whose parallax can not be measured?

We use the period-luminosity relationship and the ISL triangle to find their distance.

What have a fixed maximum brightness that occurs a few weeks after the explosion?

Who discovered that except for a few nearby galaxies all other galaxies appear to be rushing away from us at ever increasing speed?

Hubble's law of red shifts tells us that a galaxy 10x far away is traveling how much faster?

Hubble's law can be used to find the what by observing the red shift and reading odd the distance directly?

Hubble's law is a straight line relationship (how homophobic) which we can verify using other techniques locally, but far away we must what to get distances we can not measure in any other way?

Hubble's constant has a present value of what?

Hubble's constant means that a galaxy 100 Mpc (330 million light years) away is moving at what?

Speed of light divided by Hubble's constant is what?

The edge of the visible Universe is about how far away from Earth?

Any galaxies at the distance of the edge of the Universe are moving at the speed of light. Galaxies further away are moving how fast?

If we can explain Hubble's law by imgining the Universe expanding uniformly like a rubber band, objects twice as far away from each other expand at what speed?

We are the center of the Universe