Section 1 - Gravity & Satellites - orbital motion, orbit types (LEO, geostationary, polar), formula , weightlessness
Section 2 - Electromagnetic Spectrum - properties, uses & hazards of all 7 regions, wave equation
Section 3 - Stellar Spectra & Redshift - absorption lines, Doppler effect, stellar life cycle
Section 4 - Hubble’s Law, Big Bang evidence, redshift calculations
5 original annotated diagrams:
Orbital motion (Earth + ISS + geostationary, dark space background)
Full EM spectrum with frequency/wavelength/energy arrows
Stellar absorption spectra with redshift shown across 3 panels
Hubble’s Law v vs d graph with annotated best-fit line
Stellar life cycle - solar and massive star pathways
Twenty fully solved exam questions - each with worked solution, examiner comment, Do/Don’t/Common Mistake panel.