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An astronomical instrument known as the astrolabe was perfected by which culture? A. Maya B. Arabs C. Chinese D. Egyptians
Weegy: A. a navigation device (More)
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Updated 149 days ago|11/24/2016 1:47:41 PM
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An astronomical instrument known as the astrolabe was perfected by Arab.
Added 149 days ago|11/24/2016 1:47:39 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by jeifunk [11/25/2016 8:31:58 AM]
What does aphelion mean? A. an object's orbit around the Sun B. an object's orbit around the Earth C. a point in its orbit closest to the Sun D. a point in its orbit farthest from the Sun
Weegy: The aphelion is the point in the orbit of a planet or comet where it is farthest from the Sun. The Earth reaches its aphelion when the Northern Hemisphere is experiencing summer. (More)
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Updated 4/22/2014 6:02:05 PM
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If you observe a planet that appears to be reversing its direction in the sky, it's because of what? A. The planet is speeding up. B. The planet is slowing down. C. The planet truly is changing its direction. D. The Earth is passing the planet in its orbit.
Weegy: If you observe a planet that appears to be reversing its direction in the sky, it's because the Earth is passing the planet in its orbit. (More)
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Updated 4/22/2014 6:02:50 PM
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The universe is estimated to be how old? A. 2 million years B. 4 million years C. 4.6 billion years D. 13 to 14 billion years
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Updated 4/22/2014 6:00:01 PM
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The universe is estimated to be 13 to 14 billion years old.
Added 4/22/2014 6:00:01 PM
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The outer planets are known as _____. A. planetoids B. gas giants C. protoplanets D. terrestrial planets
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Updated 3/24/2016 7:54:27 PM
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The outer planets are known as Gas giants.
Added 3/24/2016 7:54:26 PM
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Confirmed by Andrew. [3/24/2016 10:23:52 PM]
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