Why is Venus hotter than Mercury?

[odanny]

No, it's NOT a runaway greenhouse effect, you ignorant fool. It has an atmosphere that is 96% CO2 which means the atmosphere is dense as hell. It's the Ideal Gas Laws that govern the temperature, not some idiocy like runaway greenhouse gases.

Sheesh. Take a damned science class!

 

[CrusaderFrank]

The stupidity in these replies is amusing, thanks everyone.

So CO2 is the reason for the heat?

 

[westwall]

The stupidity in these replies is amusing, thanks everyone.

The stupidity of the OP tops them all.

 

[Stryder50]

The stupidity in these replies is amusing, thanks everyone.

The stupidity of your OP is even more amusing, when not distressing.

 

[luiza]

. A Dyson sphere has a star at its center. Plus, they are artificial.

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]

So if Venus lost half its CO2 atmosphere, the temperatures would only drop 1.5F?

 

[miketx]

So if Venus lost half its CO2 atmosphere, the temperatures would only drop 1.5F?

To close to the star.

 

[odanny]

The stupidity of your OP is even more amusing, when not distressing.

More amusement.

 

[odanny]

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

en.wikipedia.org

 

[westwall]

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

en.wikipedia.org

Magellan gave us more info than all of the Soviet missions combined.

 

[CrusaderFrank]

To close to the star.

But if CO2 is the driver and you get a 1.5 or 3F increase with every doubling.....

 

[miketx]

But if CO2 is the driver and you get a 1.5 or 3F increase with every doubling.....

May not work like that on Venus.

 

[odanny]

Magellan gave us more info than all of the Soviet missions combined.

Take a science class sometime. You can sign up for these online, just start with the basics.

 

[Stryder50]

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

en.wikipedia.org

 

[miketx]

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

en.wikipedia.org

That's what they tell us.

 

[Stryder50]

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]
...

Solar System - Wikipedia

en.wikipedia.org

And the angular momentum, basically common direction and energy from the formation out of the revolving disc;

Angular momentum in the Solar system

Comparison of angular momenta in solar system components.

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;

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]

I want to know why Venus ( and also Uranus) spin the "wrong" way -retrograde motion . I do not want to believe in past collision theories or specific Sun causes . How about it being artifical and towed in as a Dyson Sphere? With the Hollow Moon being a later addition ? Far more interesting than soppy party politics, imo .

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

en.wikipedia.org

The most logical explanation for this would be one or more impact events and/or close encounters/passing very close by of a very large and massive body. i.e. another BIG planet, which gravitational mass would pull Uranus over on it's side. And include a flip of sorts so that it "north" pole now faces the Sun giving it that retrograde rotation effect.

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

en.wikipedia.org

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]

No, it's NOT a runaway greenhouse effect, you ignorant fool. It has an atmosphere that is 96% CO2 which means the atmosphere is dense as hell. It's the Ideal Gas Laws that govern the temperature, not some idiocy like runaway greenhouse gases.

Sheesh. Take a damned science class!

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]

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.
...

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

 

[miketx]

I want to know why Venus ( and also Uranus) spin the "wrong" way -retrograde motion . I do not want to believe in past collision theories or specific Sun causes . How about it being artifical and towed in as a Dyson Sphere? With the Hollow Moon being a later addition ? Far more interesting than soppy party politics, imo .

Aliens.