All Questions
Tagged with earth orbital-motion
104
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What's the Earth's linear acceleration component around the Sun?
The earth's centripetal acceleration around the Sun is $0.006m/s^2$ does this mean one can say the earth's acceleration when it travels(revolves) at $670,000mph$ is simply equal to its centripetal ...
- 331
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2
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93
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Is the period a physical observable in General Relativity?
I am currently seeing the classical tests of GR. To justify the introduction of a test based on the Doppler effect, the professor says that the previous test ( Shapiro and echo-radar test ) is based ...
- 181
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97
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Is the Earth orbiting an 'illusory' Sun, owing to the 'speed' of gravity? [duplicate]
We see the Sun about eight minutes after light left it. Presumably this means we are also experiencing the Sun's gravity 8 minutes after it 'left' the Sun.
So are we orbiting around the Sun we can ...
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160
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Day/Year Length Of Larger, but same mass, Earth? [closed]
I’m wondering how the length of a day and year would change on Earth if it was twice as big, but the same mass (less density)?
Also, would such a difference cause it to orbit closer or further from ...
- 107
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1
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Gravitation question
I’d like to ask the following doubt that came to me after some exercises:
Is it possibile to exactly establish,given a satellite orbiting Earth with a certain $\vec v_{0}$ and distance $\vec R_{1}$ ...
- 101
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3
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65
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Since astronomers are adding 'leap seconds' to our years nowadays, does that mean Earth's orbital period is getting longer?
How long was an Earth year several billion years ago? (I'm assuming constant days, even though I know days were much shorter back then).
- 4,509
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178
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Why is the gravitational pull equal on all sides of the Earth"?
I understand that the Earth moves through the solar system at an extremely fast rate, but a question occurred to me as I reflected on this piece of knowledge: Does the speed of the Earth traveling at ...
- 285
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123
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Are there "eccentric seasons", where do they occur, and why don't we hear more about them?
The earth is on an eccentric orbit. It's a small eccentricity (let's say e=0.01 https://www.wikiwand.com/en/Orbital_eccentricity) but it's there.
As it moves closer and farther from the sun the ...
- 531
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1
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388
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How can I obtain the position of the Earth on the orbit for given date?
I would like to be able calculate (or at least download some time-series data of) the position of the Earth on it's orbit at given date. For my purposes, it would be sufficient to account for the ...
- 111
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4
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734
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Does escape velocity require you to cross Moon's orbit?
Escape velocity is the velocity required to project an object from an object's (here, the Earth's) surface so that it "escapes" the gravity of that object (or in our case, the Earth's gravity). Now, ...
- 115
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Is the orbit of Earth currently decaying?
As we know, interplanetary space is not completely empty. This would cause a drag to Earth, spiralling it towards the sun in a long enough timescale, which appears to be what has happened for many ...
- 1,223
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Gravitational effect of larger solar system to Earth orbit
Let's say our solar system enters to gravitational area of a larger solar system. Does Earth's orbit of sun get affected from this case?
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4k
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How does Earth rotate on its axis, clockwise or anti-clockwise?
How does Earth rotate on its axis, clockwise or anti-clockwise? How does Earth orbit around the Sun, clockwise or anti-clockwise? How do Earth's satellites orbit around the Earth, clockwise or anti-...
- 115
2
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4
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303
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Backward jerk in Earth's frame?
When the bus starts suddenly it accelerates and we experience a backward jolt, now since the Earth is continuously accelerating through space time why don't we experience that jolt here on earth ...
- 875
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142
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Do we weight a tiny bit less due to the orbit of the Earth around the Sun?
Of course the Earth is orbiting in a weightless state around the Sun so people on it too.
Now there could also be some tidal force of the Sun on the Earth, but are they realy caused by the orbit of ...
- 3,348