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Old 03-29-2012, 04:11 PM
 
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Quote:
Originally Posted by Brian.Pearson View Post
I tell my wife I'm getting younger. Hypothetically speaking, the tides would eventually cease to exist.
I haven't done the math, though I'm sure somebody has, but my guess is the Sun will go red-giant before that happens.
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Old 03-30-2012, 06:12 AM
 
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I was hoping to see something little more explicit for the Tycho crater.
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Old 03-30-2012, 04:32 PM
 
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Originally Posted by Brian.Pearson View Post
It seems to me both the Moon and Earth would have both been hit multiple times.
As in multiple asteroid bombardment or in a large cataclysmic collision with a planet size object?
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Old 04-02-2012, 10:29 PM
 
Location: Seattle, WA
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Quote:
Originally Posted by Brian.Pearson View Post
I tell my wife I'm getting younger. Hypothetically speaking, the tides would eventually cease to exist.
You'd still have small tides from the sun. When you have "spring tides," it's actually the combined tides from the moon and the sun.
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Old 04-02-2012, 11:52 PM
 
Location: Texas
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Originally Posted by hurricaneMan1992 View Post
You'd still have small tides from the sun. When you have "spring tides," it's actually the combined tides from the moon and the sun.
I wouldn't have thought of that. We could have Venus and Mercury as well, lined up.
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Old 04-06-2012, 03:11 PM
 
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Quote:
Originally Posted by Brian.Pearson View Post
It's amazing how circular the orbit is. Unfortunately, we'll eventually lose the Moon. I wonder how that will effect things.
IIRC the moon moves away from Earth at rate of about half an inch per year. When the moon finally leaves Earth orbit, the planet will spin wildly on it's axis because the moon also currently provides Earth with rotational stability. Night and day times will become erratic. It's amazing how lucky we are that all the right forces came together to provide us with regular seasons and sunrise/sunsets.
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Old 04-06-2012, 03:47 PM
 
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Originally Posted by Aspe4 View Post
IIRC the moon moves away from Earth at rate of about half an inch per year. When the moon finally leaves Earth orbit, the planet will spin wildly on it's axis because the moon also currently provides Earth with rotational stability. Night and day times will become erratic. It's amazing how lucky we are that all the right forces came together to provide us with regular seasons and sunrise/sunsets.
Actually it's about 3.8cm or just shy of 1.5 inches. The sun will go red giant before any significant impact on the earth could be noticed because of it's recession.
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Old 04-06-2012, 07:10 PM
 
Location: Texas
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Originally Posted by DentalFloss View Post
Actually it's about 3.8cm or just shy of 1.5 inches. The sun will go red giant before any significant impact on the earth could be noticed because of it's recession.
I'll use a lot of Dental Floss before then...
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