Why is Venus hotter than Mercury?
- Thread starter odanny
- Start date
CrusaderFrank
Diamond Member
- May 20, 2009
- 153,046
- 78,258
- 2,645
The stupidity in these replies is amusing, thanks everyone.
So CO2 is the reason for the heat?
The stupidity in these replies is amusing, thanks everyone.
The stupidity of the OP tops them all.
Stryder50
Platinum Member
The stupidity of your OP is even more amusing, when not distressing.The stupidity in these replies is amusing, thanks everyone.
luiza
Diamond Member
Exactly, the very point I made and one which many top experts have debated ." Dyson spheres may currently sound a little sci-fi, but they aren't actually impossible for humanity to achieve. Unlike time travel or teleportation, the physical and mechanical concepts behind Dyson spheres are far more realistic and could be achieved over the next few centuries, if humanity continues to advance at a relatively speedy rate".
CrusaderFrank
Diamond Member
- May 20, 2009
- 153,046
- 78,258
- 2,645
So if Venus lost half its CO2 atmosphere, the temperatures would only drop 1.5F?
odanny
Diamond Member
- Thread starter
- #29
Between 1961 and 1983 the Soviet Union had 16 space missions to Venus, with their Venera space program, whether orbiters or landers. We owe much of our knowledge of Venus to these missions.
en.wikipedia.org
Venera Missions to Venus
nssdc.gsfc.nasa.gov
Venera - Wikipedia
Between 1961 and 1983 the Soviet Union had 16 space missions to Venus, with their Venera space program, whether orbiters or landers. We owe much of our knowledge of Venus to these missions.
Venera Missions to Venus
nssdc.gsfc.nasa.gov
Venera - Wikipedia
Magellan gave us more info than all of the Soviet missions combined.
CrusaderFrank
Diamond Member
- May 20, 2009
- 153,046
- 78,258
- 2,645
But if CO2 is the driver and you get a 1.5 or 3F increase with every doubling.....
Stryder50
Platinum Member
Speaking of a science class, some basics to start with;
The formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.[1] Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.
This model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, chemistry, geology, physics, and planetary science. Since the dawn of the Space Age in the 1950s and the discovery of exoplanets in the 1990s, the model has been both challenged and refined to account for new observations.
The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later to have been captured by their planets. Still others, such as Earth's Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets might have shifted due to gravitational interactions.[2] This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.
...
en.wikipedia.org
Formation and evolution of the Solar System
...The formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.[1] Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.
This model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, chemistry, geology, physics, and planetary science. Since the dawn of the Space Age in the 1950s and the discovery of exoplanets in the 1990s, the model has been both challenged and refined to account for new observations.
The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later to have been captured by their planets. Still others, such as Earth's Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets might have shifted due to gravitational interactions.[2] This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.
...
Formation and evolution of the Solar System - Wikipedia
miketx
Diamond Member
- Dec 25, 2015
- 121,555
- 70,600
- 2,645
- Banned
- #35
That's what they tell us.Speaking of a science class, some basics to start with;
Formation and evolution of the Solar System
...
The formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.[1] Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.
This model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, chemistry, geology, physics, and planetary science. Since the dawn of the Space Age in the 1950s and the discovery of exoplanets in the 1990s, the model has been both challenged and refined to account for new observations.
The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later to have been captured by their planets. Still others, such as Earth's Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets might have shifted due to gravitational interactions.[2] This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.
...
Formation and evolution of the Solar System - Wikipedia
Stryder50
Platinum Member
Next consideration is the angular momentum of the Solar System and the planetary orbits;
...
As a result of the formation of the Solar System, planets and most other objects orbit the Sun in the same direction that the Sun is rotating. That is, counter-clockwise, as viewed from above Earth's north pole.[30] There are exceptions, such as Halley's Comet.[31] Most of the larger moons orbit their planets in prograde direction, matching the planetary rotation; Neptune's moon Triton is the largest to orbit in the opposite, retrograde manner.[32] Most larger objects rotate around their own axes in the prograde direction relative to their orbit, though the rotation of Venus is retrograde.[33]
...
en.wikipedia.org
And the angular momentum, basically common direction and energy from the formation out of the revolving disc;
www.zipcon.net
...
In theory, the planets forming out of the same spinning disc of dust and other matter from which the Sun was created, every one should have the same direction of orbit about the Sun, the same direction of rotation on their axis, and remain within the plane matching the Sun's equator, and have their rotational axis perpendicular to the ecliptic of the Sun's equator.
However, nearly every planet has a tilt to it's rotational axis and an orbit inclination from the Solar equatorial plane;
www.discovermagazine.com
...
As a result of the formation of the Solar System, planets and most other objects orbit the Sun in the same direction that the Sun is rotating. That is, counter-clockwise, as viewed from above Earth's north pole.[30] There are exceptions, such as Halley's Comet.[31] Most of the larger moons orbit their planets in prograde direction, matching the planetary rotation; Neptune's moon Triton is the largest to orbit in the opposite, retrograde manner.[32] Most larger objects rotate around their own axes in the prograde direction relative to their orbit, though the rotation of Venus is retrograde.[33]
...
Solar System - Wikipedia
Angular momentum in the Solar system
Comparison of angular momenta in solar system components.
In theory, the planets forming out of the same spinning disc of dust and other matter from which the Sun was created, every one should have the same direction of orbit about the Sun, the same direction of rotation on their axis, and remain within the plane matching the Sun's equator, and have their rotational axis perpendicular to the ecliptic of the Sun's equator.
However, nearly every planet has a tilt to it's rotational axis and an orbit inclination from the Solar equatorial plane;
Giving a Side-Eye to the Solar System
All the major planets—and almost all of our space probes—obit above the Sun's equator, trapped in a sideways perspective.
www.discovermagazine.com
Stryder50
Platinum Member
Believe what you want, but so far "Occam's Razor" suggests that collisions and close encounters figure prominently in the orbital and rotational deviations of the planets.
So far it's some form of collision event that has the best case for the Earth ~ Moon/Luna planetary system. Granted the impact like was over 4+ Billion years ago in the Earth history of Earth's formation. But evidence strongly suggests impact as formation of our pair.
In the case of Uranus, it's axial inclination to the ecliptic is about 97.8 degrees. One of it's rotational poles point almost directly towards the Sun and it rolls along on it's equator as it orbits about the Sun, with retrograde spin.
Uranus - Wikipedia
In the case of Venus, it looks like a very similar event of either impact(s) and or close passage of another body/planet of much larger mass and gravitational pull such that it would 'flip' Venus 'upside-down' such that it's north pole is now south and the angular momentum was retained, but with the retrograde alteration to it's "spin". This would involve a huge amount of energy, enough that might have broken the planet apart, but which would appear to have caused much of the volcanic action/history, the thicker atmosphere, and huge amount of energy turned into heat which has been retained.
Venus - Wikipedia
Granted, the above could be rather fantastic at first examine, but it's the only scenario I've thought of that would fit all the pieces of the puzzle together.
Rigby5
Diamond Member
I don't get your point?
The ideal gas laws do include temperature, but more as input, in how it effects volume and pressure.
Since the atmosphere of Venus is open to space and not contained in a pressure cylinder, it is not possible to compress it artificially, in order to increase the temperature.
What effects the temperature of the atmosphere of a planet is how much of the solar heat is retained, and how much is radiated back out into space.
And that is where the greenhouse effect comes into play.
The point being that CO2 converts solar radiation into vibratory heat, which then can not leave the planet, since it is surrounded by vacuum that can not conduct vibratory heat.
The reason it is called "runaway" is that once the atmosphere got hot enough to evaporate the oceans of water on Venus, then the fact water vapor is 17 time more of a greenhouse gas than CO2, ensured that it could never again lose heat by radiation out into space, and cool off.
Stryder50
Platinum Member
It's possible, and likely, that this tilting of planet rotational axis, inclined orbits to the Sun's equatorial ecliptic, and elongated (non-circular) orbital paths about the Sun; could all be the result of a single large and massive intruder planet that might still be caroming about our Solar System; admittedly in very elongated, inclined, and long term(time length) orbit. Taking it often far out in the distance from the Solar System before again coming back into the inner orbits of the planets.
...
MSN
MSN
MSN
MSN
...
There might be an ice giant planet hiding in our solar system
MSN
A 'captured' alien planet may be hiding at the edge of our solar system — and it's not 'Planet X'
MSN
Scientists discover secret planet hiding in our solar system
MSN
Our Solar System May Be Hiding an Extra Planet, Scientists Say
MSN
Similar threads
New Topics
-
California has just blocked deportations by Ice ???- Started by Quasar44
- Replies: 5
-
Why don't young good looking people go to progressive rallies?- Started by JakeWIlls92
- Replies: 5
-
House republicans on Judiciary Committee vote to allow trump to deport American Citizens.- Started by Crepitus
- Replies: 16
-
-
