The Expanding Universe

The branch of astronomy that deals with the origin and evolution of the universe.

• Cosmology

• Astrometry

• Astrology

• Geology

Who concluded that the universe is not static but is continuously expanding?

• Aristotle

• Eratosthenes

• Aristarchus

• Edwin Hubble

The theory which explains how the universe expanded from a highly dense and hot state.

• Nucleosynthesis

• Cosmic Inflation

• Nebular Hypothesis

• Big Bang Theory

It allows scientists to determine that stars and galaxies are moving away from an observer.

• Parallax

• Doppler Effect

• Radar Ranging

• Cosmic Distance Ladder

One of the pieces of evidence that support the expanding theory is the continuous discoveries of galaxy formation across the universe and differences in the structure of these galaxies.

• Ratio of Primordial Elements

• Formation of Galaxies

• Cosmic Background Radiation

• Primordial Gas Clouds