Physics module 28 · Put your knowledge to work
Space & Stars Physics Applications
Practise orbit, luminosity, parallax, and Hubble-law problems.
6 problem sets · Learn at your pace · Some resources require membership
From understanding to problem solving.Your next step
Choose a problem set
Start with a familiar topic, then work towards more demanding problems.
6 of 6 sets
- 01Problem studio
The Earth and the Solar System Problems
v = 2πr/T, geostationary orbits from T² = 4π²r³/GM, Kepler ratios, and weighing the Sun.
Open practice - 02Problem studio
Star Birth and Life Cycles Problems
L ∝ M³·⁵ and t ∝ M⁻²·⁵ lifetimes, remnant classification, neutron stars, and Schwarzschild radii.
Open practice - 03Problem studio
The Hertzsprung-Russell Diagram Problems
Wien’s λ(max) = 2.90 × 10⁻³/T, L = 4πR²σT⁴, luminosity ratios, and reading giants and dwarfs.
Open practice - 04Problem studio
Measuring the Universe Problems
Parallax d = 1/p, parsecs and light-years, b = L/4πd², and standard-candle distances.
Open practice - 05Problem studio
Redshift and the Big Bang Problems
z = Δλ/λ, v = zc, Hubble’s law v = H₀d, and the 1/H₀ age of the universe.
Open practice - 06Problem studio
Astrophysics Calculus Problems
The escape integral GMm/r, v = √(2GM/r), and Schwarzschild radii r = 2GM/c².
Open practice
Review the foundations 6 related lessons
Extra challenging questions
Take the ideas further with course-specific extension questions, supplied-data graphs and worked solutions.