Why did Venus get so hot?

by Due_Narwhal4937

26 Comments

  1. Once there was a huge, global civilisation that started to burn remains of previous life. It allowed them to rise quickly in science. They found other, better sources of energy that didn’t cause problems. But a few of them that owned the sources of the previous fuel wanted to have taps of precious metal in their bathrooms, so they manipulated everyone to keep using the fuel that caused issues. The rest is history.

    (No, we don’t know. But we do know that it got hot enough to start vaporising water, which is also a greenhouse gas. So runaway greenhouse effect.)

    Edit to add:

    Venus gets 2,623 W/m² of solar radiation, compared to 1,373 W/m² for Earth and 591 W/m² for Mars.

  2. whynaughtlaugh on

    Its a runaway greenhouse effect. Venus once had oceans like earth but now theyre all steam in the atmosphere. We would be crushed by the weight of the air on the surface of venus

    Edit venuses lack of magnetosphere caused all water vapor to be broken into hydrogen and oxygen molecules and lost to space

  3. By having more energy entering the system than exiting. Runaway greenhouse effect. Carbon Dioxide is a good insulator.

  4. Maybe Venus has always been hot, behind those thick glasses and ponytail. Maybe you’re the one that’s changed OP.

  5. Because the life forms on Venus decided that climate change isn’t real and kept doing things to heat up the planet by using gas and other pollutants causing a greenhouse effect. 

  6. Low_Bandicoot6844 on

    Venus has an atmosphere composed of 96% carbon dioxide (COâ‚‚), a gas that traps heat very efficiently.

  7. Leading_Study_876 on

    CO2 – please explain this to Trump and his followers before they kill us all.

    And all of the innocent cute little creatures that share this world. Also the nasty ones, to be even-handed.

  8. The same reason we would if Donald P Trump ran everything. Greenhouse gasses that apparently don’t exist!

  9. Venus has a super thick and dense atmosphere. It is a pressure cooker. Read about the Russian probes that went there. Venus is very different to Earth.

  10. My guy says that Venus doesn’t have plate tectonics. Maybe it did at one point. So on earth, carbon is naturally sequestered because where two plates come together, the plate going under buries the carbon and takes it out of the atmosphere. Venus doesn’t have this so all of the greenhouse gases that come from volcanism remain in the atmosphere causing the runaway greenhouse effect and crazy air pressure.

  11. CressDirect5902 on

    Earth has the ability to recycle carbon back into the mantle through subduction, where as venus lacks any form of plate tectonics.
    Plate tectonics have done a fantastic job of regulating volcanism on earth. Venus, on the other hand, suffers from rampant volcanism across its entire surface.
    Because of this, venues atmosphere is like 80x denser than earth’s, and mostly co2 which traps a lot of heat.
    Its day is also longer than its year, so the sun is in the sky for 60 days at a time.

  12. Occam’s razor usually has the best explanation – it’s twice as close to the Sun as Earth. How that heat imbalance manifests itself, a runaway greenhouse, is secondary to the primary cause which is proximity to a star. Put Earth at the same distance and it would quickly experience similar effects.

  13. Is this a serious question or just a prompt to get us to make silly jokes?

    Closer to the sun, thick atmosphere, hot planet.