History
What is geocentrism?
An earth centered universe
Who was the first scientist to really publish works on heliocentric theory?
Copernicus
What is the difference between astronomy and cosmology?
Astronomy is the study of the universe and its objects, cosmology is the study of how the universe and its objects formed.
What is the difference between reflecting and refracting telescopes?
Reflecting uses mirrors, refracting uses lenses.
What is a constellation?
A group of stars that form a picture or recognizable pattern in the sky.
Who was the ancient Greek astronomer who believed in the 4 elements as an explanation for geocentrism?
Aristotle
What did Tycho Brahe contribute to modern astronomy?
Very precise measurements of planets and stars.
This is an instrument that utilizes lenses or mirrors to view distant objects.
Telescope
The James Webb and Hubble Telescopes
Why don't we see the same constellations each night?
Because of the rotation and orbit of the Earth.
For over 1,500 years this astronomers theory was believed.
Who is credited with laws of planetary motion?
Johannes Kepler
This is all of the frequencies or wavelengths of radiation
The electromagnetic spectrum consists of radiowaves, microwaves, gamma and xray radiation, what part of the electromagnetic spectrum do we see?
Visible light
What is a circumpolar star?
A star that is visible all night and all year. They are located near the poles.
What greatly helped the Greek and Roman astronomers with their astronomical observations?
Known as the "Father of Gravity" for his 3 laws of motion.
These are recognizable patterns in the sky.
Constellation
What scientist was credited with the discovery of the telescope?
Galileo Galilei
What two measurements do scientists use with the celestial sphere?
Right ascension and declination. (East, North/South)
What is heliocentrism?
A sun centered universe
What did Edwin Hubble discover about the universe?
That there were many galaxies beyond our own.
This is the point in the sky directly above you.
Zenith.
Give an example of a nonoptical telescope
Radio and Xray telescopes
_________________ is the distance light travels in one year. And that distance equates to ______________ kilometers. (<- I may have said miles in your notes. I am sorry. Its the same number though)
Light year; 9.46 trillion kilometers.