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please fill in the blank. also, the point at which the planet is closest to the sun in its orbit is called? please help, i couldnt find it anywhere in my text book.

2007-01-16 14:11:14 · 8 answers · asked by Rebecca A 1 in Science & Mathematics Astronomy & Space

8 answers

Aphelion = furthest

Perihelion = closest

2007-01-16 14:15:05 · answer #1 · answered by Mark P 5 · 0 1

The sun has about 2.2 times the gravitational force on the moon than does the earth. However, the earth and moon both orbit the sun together, so the moon's momentum is already at equilibrium with the sun's gravity. So there is a lot more force holding the moon in the sun's orbit than the earth's, but both orbits are stable. Those claiming the earth has more gravitational force on the moon than the sun are probably confusing it with tidal force, which is different. Using the formula a = Gm/r^2 to determine gravitational acceleration shows that the moon recieves about .000275 g's from the earth, and .000605 g's from the sun. Escape velocity from the sun at the moon's distance is also much higher than from the earth.

2016-05-23 22:47:23 · answer #2 · answered by Anonymous · 0 0

The closest point to the Sun in a planet's orbit is called perihelion. The furthest point is called aphelion.

2007-01-16 14:18:40 · answer #3 · answered by Scott B 3 · 0 0

Stephen has it right...all those apogees and periges refers to satelites around the earth, like the moon
apehelion farthest point from the sun
perhelion closests point from the sun

2007-01-16 16:38:24 · answer #4 · answered by James O only logical answer D 4 · 0 0

Apogee is the term for a satellite orbiting the Earth.

For the Sun, it is called aphelion.

For other stars, it is called apastron.

2007-01-16 14:23:23 · answer #5 · answered by Stephen S 3 · 1 0

Perigee = closest

Apogee = farthest away

2007-01-16 14:24:49 · answer #6 · answered by HeyDude 3 · 0 1

Apogee = furthest
Perigee = closest

i think..lol

2007-01-16 14:18:53 · answer #7 · answered by LeBaNeSeHoTtIe 2 · 0 1

apogee is the farthest and perigee is the closest.

2007-01-16 14:15:45 · answer #8 · answered by ignoramus 7 · 0 1

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