Looking at the Night Sky
Gazing at the Sky with just your eyes.
What is Naked- eye Astronomy?
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Appearent Magnitude.
What is measuring how bright and object appears from earth?
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Three types of ways to Classify Stars.
What is tempature, color, and mass?
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When a star becomes a White Dwarf.
What is casting off hydrogen and helium gases in its outer layers?
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What is a collection of stars?
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Most Modern Constellations.
What are Ancient Constellation?
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Two ways Astronomers Measure Brightness.
What is brightness when they appear from earth and how bright they actually are?
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Colors of the Massive Stars.
What is blue-white?
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Almost all of the elements in the universe other than _____ and ____ were created by nuclear reactions inside the cores of massive stars.
What is Hydrogen and Helium?
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The Milky Ways type of Galaxy.
What is a spiral galaxy?
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Spectroscopes are helpful to Astronomers.
What helps study stars characteristics, temperature, compositions, and engerigies?
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The Luminosity of a Star is Measured.
What is Absolute Magnitude Scale?
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When scientists plot the temperature of Stars against their Luminosities.
What is a Hertzsprung-Russell Diagram?
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Earths Location.
What is the Milky Way?
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By studying interacting Galaxies Scientists determind.
The mass in the universe is dark matter?
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Telescopes are Spectroscopes different.
What is telescopes function to collect light from a particular star and a spectroscope is to display this light on a sensor?
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Negative number Planets on Apparent Magnitude Scale.
What is the Sun, Moon, Venus, and Sirius?
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Regions of strong Magnetic Activity.
What are Sunspots?
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Forms in the Cores of the most Massive Stars.
What is iron?
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By examining Galaxies Astonomers hypothesize that mass in the Universe is invisiable.
What is Dark Matter?
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Measurment in the Solar System are based on the average distance between Earth and the Sun.
What is a -1 astronomical unit?
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A Light-year is a Measurment of time.
What is Distance?
Page: 804
A shell of cooler hydrogen above a Star Core.
What is Radiative Zone?
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Gravity causes Stars to clump up.
What are Larger Galaxies?
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What is Dark Energy why is the Universe expanding faster.
What is dark energy in an active area of research and dark energy pushing the galaxies apart?
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