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m&m 1.3

Distant Wonders

QuestionAnswer
The sun The most important star to us. 93,000,000 million miles away from Earth
Photosphere The only visible part of the sun
Sunspots Darker parts that appear on the sun
Spicules Flamelike columns of gas that last 5-10 minutes
Chromosphere Made up of spicules. Also known as "burning prairie". Only visible during a Solar Eclipse
Solar Eclipse When the photosphere is blocked by the moon
Solar Flares Bursts of energy that sometimes block spicules
Solar Prominences Looplike streams of dense gas
Corona Vapor that surrounds the chromosphere. Only visible during total eclipse
Solar Wind A high-speed stream of charged particles that beats against the Earth's upper atmosphere
Proxima Centauri Next closest star
Light year The distance light travels in one year
Parallax When it looks like the object has moved when really the observer has moved
Parsec Equal to 3.26 light years
Apparent magnitude The brightness of a star as it appears to an observer on the earth
Inverse square law The brightness of a star varies inversely as the square of the distance from the star
Absolute magnitude The brightness of a star would have to an observer if all stars were equally distant from earth. Depends of surface temperature and size
Binary star 2 stars orbiting each other
Optical double A pair of stars that appear to form a binary star
Star cluster Large stellar groupings such as Pleiades
Globular cluster Wandering groups of thousands or millions of stars outside the Milky Way
Nova Stars that suddenly flare up to many times their original brightness
Supernova The explosion of a star that causes massive destruction.
Hipparchus Developed system of classifying stars by their brightness. The lower the apparent magnitude number, the brighter the object
Giants and Supergiants Lower surface temperatures, large size, fairly bright
Dwarfs Average size stars
White dwarfs Dimmer than dwarfs but same temperature
Created by: Jer Stephens
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