Science Fiction question: How could Venus be made cooler?
Lets suspend our `scientific understanding of reality for a moment. Suppose the planet Venus was more Earthlike prior to WWII, about which time its core stopped spinning and it became the Hell it is today.
Venus, even with a spinning core and shielding from Solar winds, even an Earthlike Venus, would be about seventy degrees hotter worldwide due to its proximity to the sun. Instead of temps in the seventies and eighties they’d be about 140 f.
So, how could we make Venus, or an Earthlike planet in Venus’place, more pleasant for Earthlings in temperature and climate? How could an Earthlike Venus, closer to the sun, be made as cool or slightly cooler than Earth?,
Observing members:
0
Composing members:
0
7 Answers
It is too close to the Sun!
But couln’t something make it cooler?
Ice ages?
Is the idea totally implausible?
If those thick clouds blocked and redirected solar radiation?
(I do mean a more Earthlike Venus—not the Hell that it really is)
Ya cool down the Sun by a factor of ten then the Earth freezes but you get a cool Venus !
Take the greenhouse gas from Venus and transplant to Mars. Double win.
To be clear, we are talking science fiction here – or at least science fiction as it is known in this century.
Calcite/limestone particles have been shown to reflect sunlight and are highly reactive in the atmosphere but do not destroy the ozone layer. Calcite is capable of neutralizing sulfuric, nitric, and hydrochloric acid. True. Harvard Engineering study
“Calcite is one of the most common compounds found in Earth’s crust,” says applied physicist David Keith. “The amounts that would be used in a solar geoengineering application are small compared to what’s found in surface dust.”
How do we get that calcite to Venus economically? Conventional launch vehicle lifting costs are about $20,000 per kg. .Not very economical. So how can we get it to Venus?
Here’s where the sci fiction comes in.
A massive rail gun will be used to launch material wrapped in a semi-magnetic reusable sabot that drops to earth shortly after firing. A high energy laser pre-shot would be used to ionize the air to clear the ballistic path of any friction inducing matter.
Firing rate and payload would be limited by the power supply which would likely be a dedicated fusion reactor specifically optimized for the task. Material would be launched during specific planetary windows of opportunity when Solar and Venusian gravity are additive and the Moon may be used as a gravity slingshot.
I imagine such a system would be beautiful to watch in action – from a long distance.
Maybe by utilizing a Dyson Sphere on a planetary level, rather than a star. This would allow you to cool the planet.
Answer this question 
This question is in the General Section. Responses must be helpful and on-topic.
Composing members:
0
