Curated OER
How Far... How Powerfu
Students work with a real optical spectrum of a gamma ray burst afterglow taken at the Keck Observatory. They measure the shifts of spectral lines, deduce the velocity of the astronomical object, and then use Hubble's Law to get its...
NASA
Measuring Dark Energy
You're only 10 minutes late? Do you know how much the universe has expanded in those 10 minutes? Scholars graph supernovae based on their redshift and see if the results verify Hubble's Law. If it does confirm it, the universe is...
Curated OER
How Far...How Powerful
Students explore the concept of gamma ray bursts. They examine basic physics concepts about light, measure the shifts of spectral lines, and utilize Hubble's Law to deduce the velocity of an astronomical object.
Curated OER
The Universe
Students describe what scientists mean by an "expanding universe" in their own words. They explain how scientists comprehend the universie is expanding. Students comprehend the vast scale of the universe. They comprehend how theory...