The Milky Way and Galaxies
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Democritus | Greek philosopher who first claimed the Milky Way was a lot of distant stars.
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| William Herschel | Made the first map of the Milky Way in 1785
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| How old is the Milky Way believed to be? | 13 billion years old
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| Approximately how many stars does it contain? | 200-400
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| Appearance of the Milky Way | Big black hole in the centre surrounded by a bulge. Bulge is surrounded by a halo which is surround by spiral arms made of stars, gas and dust.
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| How much of the Milky Way is invisible? | 90% of the Milky Way's matter is invisible and and still a mystery
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| Why is the Milky Way brighter on the outside than the inside? | Younger, brighter stars are on the outside, and older, dimmer stars are in the inside.
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| Where is the Milky Way best seen, and why? | Best seen in rural areas because there are not as many bright lights that block the light of the Milky Way and not as much foggy pollution
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| Why can we only see parts of the Milky Way and not the whole thing? | Our Solar System is located in one of the Milky Way's spiral arms so we can only see the parts surrounding us.
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| Dark Matter | Disguises light
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| Black Hole | Hole of dark matter that sucks in everything including time and light
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| Spiral and Barred Spiral Galaxies | Thin disk shaped galaxy with gas and dust-formed arms
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| Elliptical Galaxies | Largest galaxy that is football-shaped
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| Irregular Galaxies | misshaped galaxy because of interaction with other galaxies
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Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
NCCgradenines
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