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Worksheet
Curated OER

Chandra Explores Angular Size

For Students 9th - 12th
In this angular size worksheet, students read about how astronomers determine the size of objects in the sky by using their angular size. Students are given equations that allow scientists to convert the angular size into kilometers....
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Interactive
Other

H Twins: The Scale of the Universe 2

For Students 9th - 10th
Use the scroll bar on this site to zoom in and out of this site which will show you the relative sizes of hundreds of things in our univers, from the smallest currently known - quantum foam - to the largest - our universe. Click on any...