Who is Who
Telescopes, etc
Stars
Galaxies and other stuff
Vocabulary
100
Said that Earth is the center of the universe.
Who is Ptolemy?
100
Uses lenses to gather and focus light
What is the refraction telescope?
100
The color of the hottest stars.
What is blue?
100
The Milky Way is this type of galaxy.
What is a spiral galaxy?
100
The brightness of a star as seen from the Earth.
What is apparent magnitude?
200
In 1543, this Polish astronomer said that the sun was the center of the universe.
Who is Copernicus?
200
Gathers more light and flaws in the glass do not affect the image.
What is the reflection telescope?
200
A massive, dense object from which even light can't escape.
What is a black hole?
200
Galaxies with very bright centers and very little gas and dust.
What is an elliptical galaxy?
200
The apparent shift in position of an object when viewed from different locations.
What is parallax?
300
Proved that other galaxies exist.
Who is Hubble?
300
All of the frequencies or wavelengths of electromagnetic radiation.
What is the electromagnetic spectrum?
300
A star that expands and cools once it runs out of hydrogen.
What is a Red Giant?
300
Close companions of large spiral galaxies.
What is an irregular galaxy?
300
The diagonal pattern on the H-R diagram where most stars lie.
What is main sequence?
400
Thought that the sun and moon revolved around the Earth and other planets revolve around the sun.
Who is Brahe?
400
UV, infrared, radio, and gamma ray telescopes.
What are non-optical telescopes?
400
A small, hot, dim star that is the leftover center of an old star.
What is a White Dwarf?
400
A tight group of stars that look like a ball and contain up to 1 million stars.
What is a globular cluster?
400
Astronomers measure this in degrees north or south of the celestrial equator.
What is declination
500
In 1687, this scientist showed that all objects in the universe are attracted to each other.
Who is Newton?
500
Point where the light rays that pass through a lens or reflect from a mirror converge.
What is the focal point?
500
A spinning neutron star that emits rapid pulses of radio and optical energy.
What is a pulsar?
500
A very luminous star-like object that generates energy at a high rate.
What is a quasar?
500
Astronomers measure this in hours eastward from the vernal equinox.
What is right ascension?
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