Unit 3 & 4: General Astronomy Flashcards

Cosmology

The study of the universe's structure, origin, and evolution.

General Theory of Relativity

Einstein's theory that provides a mathematical foundation for gravity on cosmic scales.

Spectroscopy

The study of light spectra to determine the composition, temperature, and motion of celestial bodies.

Doppler Effect

The change in frequency or wavelength of light from an object moving relative to an observer.

Quantum Mechanics

The branch of physics dealing with the behavior of subatomic particles at small scales.

Classical Mechanics

Newton's laws explaining the motion of large, slow-moving objects.

Telescope Epoch

The period in astronomy history marked by advancements made possible by telescopes.

Hubble's Observation

Provided evidence for the expanding universe through the redshift of galaxies.

Galileo Galilei

Scientist known for improving the telescope and making significant astronomical discoveries.

Infrared Ray

A type of radiation that is not ionizing, unlike ultraviolet or X-rays.

Reflecting Telescope

A telescope that uses mirrors to form an image, first made by Isaac Newton in the 1600s.

Static Universe Model

Einstein's assumption that the universe is unchanging and balanced.