Nasa: Imagine the Universe: How Big Is That Star

Pupils often wonder how we know the distance to various stars. Starting with a thought experiment and progressing to a physical experiment, they determine the brightness and distance to various stars. The evaluation requires...

Can you measure the size of something that's getting bigger all the time? It depends upon your perspective! Space scholars discover fundamental facts about our ever-growing universe. The narrator explains the difference between the...

How can something as vast as the universe also be flat? Go beyond the Big Bang Theory using a video from an expansive physics playlist. Topics include the expansion and inflation of the universe, why opposite sides of the universe are...

How far back in time can scientists see? Currently, the earliest photo of the universe is the cosmic microwave background, but math models prove the universe existed long before that time. An installment from the SciShow Space series...

Aspiring astronomers study stars. They compare stars and explain the relationship between radius, mass, and diameter. By creating a star simulation, they discover how a binary star system's orbit can cause changes in the observed...

This helpful site provides everything you want to know about studying the universe. Take a look at the tools and methods scientists use to study the universe, discover some of the objects that make up our universe, learn how scientists...

The history of our understanding of the center of the universe is explored through this film. The ideas of Aristotle, Copernicus, Bruno, Descartes, and Herschel are included, as well as the new discoveries that have helped the theories...

Supernovae are divided into two basic physical types, including a description of supernova types and how they are classified based on the existence of hydrogen spectral lines. Definitions of key terms are provided.

The Big Bang Theory is more than a television show. Pupils read how Edwin Hubble observed other galaxies and noticed that the galaxies are moving away from each other. Scholars learn about the idea of the big bang and what happened next...

Is there a broader topic than the study of the universe? A video lesson for teachers provides insight into the progression of lessons on the topic from elementary through high school. Examples and descriptions give teachers solid...