Stars
Galaxies
Astronomers
Laws
Misc.
100
A gaseous body which releases radiation onto the universe through nuclear fusion.
A star
100
What are the four types of galaxies?
Spiral, Barred Spiral, Irregular, Eliptical
100
Who first proposed a heliocentric universe?
Aristarchus
100
What law did Hubble create?
Hubble's Law.
100
At Stonehenge the sun rises over the Heelstone on what day?
Summer solstice.
200
Main Sequence
The most common type of star.
200
What is the most tightly wound spiral galaxy?
Sa
200
Explain Ptolmy's model of the universe.
All planets moved in retrograde motion in a geocentric universe.
200
What was Kepler's first law of planetary motion?
The orbit of every planet is an ellipse with the sun at one of the foci.
200
What is chromatic abberation.
The fuzzines resulting from lense based telescopes.
300
The nearest star to the sun.
Proxima Centauri
300
What is Galactic Cannibalism?
The collision and combination of two galaxies.
300
What was Hubble most known for?
Creating Hubble's Law.
300
What is Kepler's third law of planetary motion?
The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.
300
Exact number of miles in a light year.
5,865,696,000,000 miles
400
Which star category has the highest luminosity?
O
400
What is believed to be at the center of every galaxy?
Black Hole.
400
Who invented the first telescope?
Lippersey
400
What is Kepler's second law of planetary motion?
A line joining a planet and the Sun sweeps out equal areas during equal intervals of time.
400
What do astronomers use the constellations for?
A way to organize the sky. (Grid system)
500
List the correct order of the letters indicating the luminosity of stars from brightest to dimmest.
OBAFGKM
500
List the order of Hubble's Tuning Fork.
Sa, Sb, Sc E0, E3, E5, E7, S0, Irregular SBa, SBb, SBc
500
Who created the first reflecting telescope? (Full name)
Sir Isaac Newton.
500
Define Hubble's Law.
All objects observed in deep space are found to have a doppler shift observable relative velocity to Earth, and to each other; and that this doppler-shift-measured velocity, of various galaxies receding from the Earth, is proportional to their distance from the Earth and all other interstellar bodies. In effect, the space-time volume of the observable universe is expanding and Hubble's law is the direct physical observation of this process.
500
Define the specific theory of the Big Bang.
The Big Bang theory is the prevailing cosmological model that describes the early development of the Universe. According to the Big Bang theory, the Universe was once in an extremely hot and dense state which expanded rapidly. This rapid expansion caused the Universe to cool and resulted in its present continuously expanding state. According to the most recent measurements and observations, the Big Bang occurred approximately 13.75 billion years ago, which is thus considered the age of the Universe. After its initial expansion from a singularity, the Universe cooled sufficiently to allow energy to be converted into various subatomic particles, including protons, neutrons, and electrons. While protons and neutrons combined to form the first atomic nuclei only a few minutes after the Big Bang, it would take thousands of years for electrons to combine with them and create electrically neutral atoms. The first element produced was hydrogen, along with traces of helium and lithium. Giant clouds of these primordial elements would coalesce through gravity to form stars and galaxies, and the heavier elements would be synthesized either within stars or during supernovae.
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