We know the universe is expanding, but how? This adapted video segment, using footage from NOVA and NASA, examines Edwin Hubble's work and how his findings laid the foundation for the Big Bang theory. [3:22]

Concepts

galaxies

Show More Show Less

Additional Tags

big bang theory, edwin hubble, hubble telescope, pbs learningmedia: hubble's expanding universe, teachers' domain, wgbh, light wavelengths

Show More Show Less

Classroom Considerations

• Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
• The intended use for this resource is Instructional