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AC Earth Moon Sun Vocab

I By: Will Sasadu I pd. 6 I 3/13/18 I
An artificial body placed in orbit around the earth or moon or another planet in order to collect information
A time or date in which the sun crosses the celestial equator
This is how our solar system is, not geocentric, but ___________________.
Created the Hubble telescope, a strong one used today
A colorless, odorless, highly flammable gas
1 ________ is equal to 365 days
tide just after the third or first quarter of the moon with the least tidal range
the highest point in the development of something
On August 21st of 2017, we had a __________ ______________ and we all went out to view it
Our planet has a 23.5 degree ________ on it's axis
Pointed a telescope to the sky to find things like Venus phases, moons, and more
The force that attracts objects together due to their masses is called ______________
When the moon has a progressively smaller part of its visible surface illuminated
The time it takes for earth to fully rotate once on it's axis
the point in the orbit of the moon or a satellite at which it is nearest to the earth
A division of the year that is based on the orbit of the moon around the Earth
a tide just after a new or full moon, when there is the greatest difference between high and low tide.
An eclipse where the moon appears dark as it passes into the earth's shadow
a distinct period or stage in a process of change or forming part of something's development
he fully shaded inner region of a shadow cast by an opaque object
Created the Heliocentric model.
The vertical difference between a high and low tide
Some proposed that our solar system was ______________________; that everything revolved around the earth
spot/patch appearing on the sun's surface from time to time appearing dark relative to the rest of the sun
the partially shaded outer region of the shadow cast by an opaque object
a conjunction or opposition, especially of the moon with the sun
The process of energy on the sun in which protons form a helium nucleus