Astronomers Ch. 18-1

Showed that planets and moons stay in orbit due to gravity

• Galileo

• Kepler

• Copernicus

• Newton

Tags

NGSS.HS-PS2-4

Was one of the first persons to use a telescope to observe celestial bodies

• Galileo

• Ptolemy

• Kepler

• Hubble

Developed a theory of a sun-centered universe

• Ptolemy

• Copernicus

• Galileo

• Brahe

Stated that planets move in elliptical orbits around the sun

• Copernicus

• Brahe

• Kepler

• Galileo

Used a mural quadrant to measure the positions of planets and stars

• Copernicus

• Kepler

• Brahe

• Newton

Developed a theory of an Earth centered universe

• Ptolemy

• Copernicus

• Kepler

• Brahe

Proved the existence of galaxies other than the Milky Way

• Copernicus

• Brahe

• Hubble

• Galileo

What does "geo-" mean?

• Earth

• Center

• Sun

What does "helios" mean?

• Earth

• Sun

• Moon

• center

The sun centered view of the universe

• Geocentric

• Heliocentric

Tags

NGSS.HS-ESS1-4