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44 students
Stars and Star Clusters
Stars as the building blocks of the unvierse
Created byTony Ceraso
Last updated 1/2026
English
English [Auto],
What you'll learn
- Stars are the workhorses of the universe and account for most of its mass. They come in many shapes and sizes, some as small as just a few miles across and others that are as large as much of our solar system. Some are hundreds of times hotter than the Sun and others are just a few thousand degrees. When stars start running out of fuel they do some crazy things like explode into supernovae or implode into tightly packed white dwarfs or black holes.
- How many stars are in the sky and how far are they?
- Stars as the building blocks of the universe
- Luminosity and Magnetude
- Absolute magnitude
- Aparent Magnitude
- Magnitude Scale
- The Steller Main Sequence
- T Tauri Stars
- Red Giant Stars
- Blue Giant Stars
- White Dwarfs
- Neutron stars
- Pulsars - Lighthouses of the Universe
- Red and brown dwarfs, and other sub-stellar objects
- Stars and nuclear fusion
- What is a star?
- The Sun: temperature, features, characteristics and atmospheres
- Star Size, Mass and Density
- Star clustering and gravity
- Open and Closed Star Clusters
- Galactic and Globular Star Clusters
- Prisms and the Range of Light
- Red and Blue Shifts in the Spectrum and what they mean
- The Doppler Effect
- Variable Stars: pulsating, intrinsic, extrinsic and cataclylsmic
- Cepheid variable stars and the calculations of distances
- Multiple star systems: binary and trinary stars
- Types of Steller Orbits
- Supernovae: causes and effects
- Black Holes
- Test Questions and Activities
Explore related topics
Course content
10 sections • 10 lectures • 2h 15m total length
Requirements
- None
Description
Stars are the workhorses of the universe and account for most of its mass. They come in many shapes and sizes, some as small as just a few miles across and others that are as large as much of our solar system. Some are hundreds of times hotter than the Sun and others are just a few thousand degrees. When stars start running out of fuel they do some crazy things like explode into supernovae or implode into tightly packed white dwarfs or black holes.
This Course includes the following great BONUS LESSONS:
What on Earth is Astronomy?
Mini-Lesson: Eclipses
Mini-Lesson: Meteor Showers
Mini-Lesson: Aurora
Project Artemis: America Returns to the Moon
Stars and Star Clusters
1. Objective
2. Warm-up activity
3. Stars in our sky: number and distance
4. Stars as related to the entire Universe: scope and function
5. Luminosity and magnitude
6. Absolute magnitude and apparent magnitude
7. Magnitude scale
8. The main sequence of stars
9. T Tauri stars
10. Red giant stars
11. Blue giant stars
12. White dwarf stars
13. Neutron stars
14. Pulsars
15. Red and brown dwarfs, and sub-stellar objects
16. Nuclear fusion
17. Definition of a star
18. The Sun: temperature, features, characteristics and atmospheres
19. Star size, mass and density
20. Star clustering and gravity
21. Open and closed star clusters
22. Galactic and globular star clusters
23. Prisms and the range of light
24. Red and blue shifts in the spectrum
25. The Doppler effect
26. Variable stars: pulsating, intrinsic, extrinsic and cataclysmic
27. Cepheid variable stars and distance calculations
28. Multiple star systems: binary and trinary stars
29. Types of orbits
30. Supernovae: cause and effect
31. Black holes
32. Test questions
33. Cross-curricular activities
Who this course is for:
- Anyone who want to know more about Astronomy