Parallax and Stellar Distance
by Anonymous
Adjust parallax, brightness, and distance to see how star distances are found and why the expanding universe has no center.
#science#middleschoolscience#earthandspace#stellarparallax#stars#cosmicexpansion#education#middleschool#grade9#scienceexperiment
About this app
Parallax and Stellar Distance is an interactive middle-school astronomy app about measuring stellar distances and understanding apparent brightness. Explore how a star’s parallax decreases as its distance increases, compare luminosity with apparent brightness using luminosity ÷ distance², and investigate why farther galaxies recede faster from every observation point.
Use cases
- Middle-school science students learning Earth and space science
- Teachers demonstrating annual parallax and parsecs
- Learners comparing luminosity with apparent brightness
- Students exploring expansion of the universe and the absence of a central point
Features
- Three interactive tabs for parallax, brightness and distance, and cosmic expansion
- Select stellar distances to compare apparent shifts and verify parallax × distance = 1
- Adjust luminosity and distance to calculate apparent brightness
- Create stars that look equally bright despite having different luminosities and distances
- Choose an observing galaxy and expansion scale to compare recession speeds
- Reset scenarios and progress through guided challenge activities