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All about STARS
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What is a complex system of garments that allow astronauts to work safely outside their spacecraft called?
Space suit
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Where are blue stars found on an HR diagram?
At the left.
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Which region of the sun produces all the heat and light we receive on Earth?
The core
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What is a space walk?
An activity in which an astronaut moves around and does work outside a spacecraft while in space.
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What are tiny meteoroids traveling fast enough to damage spacecraft called; micrometeoroids or vacuum?
Micrometeoroiods
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On which region of the sun can you find sunspots?
The photosphere
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What are the relatively cool, dark spots appearing periodically in groups on the surface of the sun that are associated with strong magnetic fields?
Sun spots
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What is an object making a complete turn on its axis?
Rotation
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What is the term for how bright a star appears to us on Earth; special relativity or apparent magnitude?
Apparent magnitude
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What describes the true brightness of a star; absolute magnitude or true luminosity?
Absolute magnitude
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What is a large, bright, gaseous feature extending outward from the sun's surface, often in a loop shape?
Prominence
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What is heat transfer in a gas or liquid by the circulation of currents from one region to another; convection or rotation?
Convection
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What is a volume of space mostly empty of matter, such as oxygen, to breathe; vacuum or microgravity?
Vacuum
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Which star would have the greatest true brightness; Canopus- absolute magnitude of -2.50 or Rigel- absolute magnitude of -8.10?
Rigel
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VY Canis Majoris is a very, very large star. It is an extremely bright, cool red star. Where would it be found on the HR diagram?
Top right
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What is a sudden eruption of magnetic energy released on or near the surface of the sun?
Solar Flare
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What variable is on the X-axis of the Hertzsprung-Russell diagram?
Temperature
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How do astronomers use our sun to measure other stars?
It's solar mass
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About how long does it take light to travel from the sun to earth?
8 minutes
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Describe microgravity.
The almost complete absence of gravity that can only be found in space.
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What is the luminous star composed mainly of hydrogen and helium around which Earth and other planets revolve?
The sun
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What is a person trained to be a part of a spacecraft crew called?
Astronaut
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