Reflection

Solar system Sun - Features

• Sun - Surface temperature and luminosity
• Sun - Layers
• Sun - Energy production

Planets

• Planets - Other planets - Properties
• Planets - Earth and its moon
• Planets - Surface temperature and atmosphere

Solar system - Other bodies

• Solar system - Asteroids and comets
• Solar system - Meteoroids

Stars

Stars - Properties

• Stars - Properties - Basic
• Stars - Properties - Brightness and luminosity
• Stars - Spectra

Stars - Evolution

• Stars - Birth
• Stars - Death

Stars - Types

• Stars - Types - Binary
• Stars - Types - Variable
• Stars - Types - Pulsars and quasars

Galaxies

Galaxies - Classification

• Galaxies - Normal - properties

Galaxies - Normal - Milky way

• Galaxies - Normal - Milky way - Size and shape
• Galaxies - Normal - Milky way - Star clusters

Universe - Origin and evolution

Universe - Expansion

• Universe - Expansion - Red shift
• Universe - Expansion - Hubble’s law

Universe - Evolution - Theories

• Universe - Evolution - Theory - Big bang
• Universe - Evolution - Theory - Steady state
• Universe - Evolution - Theory - Pulsating or oscillating universe

Astronomy

Astronomical measurements

Astronomical measurements - Distance

• Astronomical measurements - Distance - Size - Solar system
• Astronomical measurements - Distance - Size - Sun and planets
• Astronomical measurements - Distance - Planets from earth

Astronomical measurements - Mass

• Astronomical measurements - Mass - Sun and planets
• Astronomical measurements - Mass - Binary stars

Astronomical instruments

• Astronomical instruments - Telescopes - Optical
• Astronomical instruments - Telescopes - Radio, recording