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Earth and Gravity
13 cards·by legacy-5977204519337984@noemail.invalid
The distance light travels in one year
light year
a cloud of gas and dust in which new stars form
Nebula
a gigantic explosion that occurs near the end of life of some stars
supernova
a point in space that has such a strong force of gravity that nothing within a certain distance
of it can escape
black hole
a huge system of stars, dust, and gas held together by gravity
galexy
a group of stars that forms a pattern
constellation
the sun and all the bodies that orbit it
solar system
one full orbit of an object around another object
revolution
an imaginary center line around which the Earth rotates
axis
a frozen mass of ice and dust orbiting the sun
comet
one whole spin of an object on its axis
rotation
a rocky mass up to several hundred kilometers wide that revolves around the sun
asteroid
an object in orbit around another object
satellite