Posted on 01/04/2019 12:07:50 PM PST by LibWhacker
On January 3rd, 2019, Earth reached the point in its orbit where it's at its closest approach to the Sun: perihelion. Every object orbiting a single mass (like our Sun) makes an ellipse, containing a point of closest approach that's unique to that particular orbit, known as periapsis. For the past 4.5 billion years, Earth has orbited the Sun in an ellipse, just like all the other planets orbiting their stars in all the other mature solar systems throughout the galaxy and Universe.
But there's something you may not expect or appreciate that nevertheless occurs: Earth's orbital path doesn't remain the same over time, but spirals outward. This year, 2019, our perihelion was 1.5 centimeters farther away than it was last year, which was more distant than the year before, etc. It's not just Earth, either; every planet drifts away from its parent star. Here's the science of why.
The force responsible for the orbits of every planet around every solar system in the Universe is the same: the universal law of gravitation. Whether you look at it in terms of Newton, where every mass attracts every other mass in the Universe, or in terms of Einstein, where mass-and-energy curves the fabric of spacetime through which other masses travel, the largest mass dominates the orbit of everything it influences.
(Excerpt) Read more at forbes.com ...
VENUS
I am selling land parcels on Venus. After a few billion years, the Earth moves farther out and Venus will take it’s place in the goldilocks zone, not too warm, not to cool.
The bad news is that Venus has feminine connotations, as opposed to Mars, and Mrs. Pelosi may then be President.
At 9300 per billion that equals 46500 in the 5 billion years it will take the sun to expand to our orbit of 93 million miles. Not far enough to help us not get broiled. 46500 is 1/5th the distance to the moon. A hickup.
The sun is also heating up as it ages. Earth’s oceans will boil away long before they have a chance to freeze.
For me, it boils down to this: 1.5 centimeters a year equals 9,300 miles in a billion years. So earth will most likely still be vaporized in the end."
A billion years is the relevant timeframe, because by then the Earth will be hot enough to vaporize the oceans. No, nothing to do with CO2 - the Sun is getting more luminous over time.
Life on Earth will be gone long before the Sun becomes a red giant...
In about one billion years, the solar luminosity will be 10% higher than at present. This will cause the atmosphere to become a "moist greenhouse", resulting in a runaway evaporation of the oceans. As a likely consequence, plate tectonics will come to an end, and with them the entire carbon cycle. Following this event, in about 2–3 billion years, the planet's magnetic dynamo may cease, causing the magnetosphere to decay and leading to an accelerated loss of volatiles from the outer atmosphere. Four billion years from now, the increase in the Earth's surface temperature will cause a runaway greenhouse effect, heating the surface enough to melt it. By that point, all life on the Earth will be extinct. The most probable fate of the planet is absorption by the Sun in about 7.5 billion years, after the star has entered the red giant phase and expanded beyond the planet's current orbit.
https://en.wikipedia.org/wiki/Future_of_Earth
9300 miles will do nothing to counteract 10% greater luminosity. It's interesting to think that life on Earth is 3/4 of the way through its timeline.
We may need global warming to avoid freezing.
I always had the hots for lois neetleton
Damn Trump!
It has to be his fault.
Danged suv’s and pickups..
My feet are cold.
The same can be said about Michael Moore.
I, too, thought he had it backwards, but, I think he was trying to point out that when the Sun went Red Giant the 9-18,000 miles won’t matter.
No - the sun will enter its death throes and expand beyond earth’s orbit, frying everything. THAT’s real global warming!
The poles of fear, the extremes of how the Earth might conceivably be doomed. Minor exercise in the care and feeding of a nightmare, respectfully submitted by all the thermometer-watchers in the Twilight Zone.
Wait a minute! Don’t the forces of physics and nature know that MAN is here, and MAN demands absolute stasis and stability? The only thing thing causes change is politically incorrect thinking!
Anybody know how many miles “1.5 centimeters” is?
Did the global warming guys come up with this?
Pray tell what gravitation source is pulling us away from the immense gravitational source as the Sun? Or are they supposing that all the planets will clump together at some focus of points that is currently outside earth’s orbit? And then the clump will be dragged to the sun ... after destroying all life on earth long before?
3/(5280 x 12 ) = ?
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