Venus is Earth’s sister planet. It has almost the same size and gravity as Earth.
As you know, the Venus atmosphere is extremely harsh. So bleeding into space would be one way to make the planet more friendly to people.
The one big thing about Venus is that it’s atmosphere is way thicker than Earth’s. There’s no known technology that could somehow siphon all the air from Venus and send it adrift in space anymore than we could siphon all our CO2 on Earth into space.
Well, in my opinion we should focus on the Moon.
As for Mars vs. Venus, both have unbreathable atmospheres. Mars is very cold, hundreds of degrees below zero cold. Venus is hot, melt stuff in a few minutes hot.
Mars doesn’t have rain or surface liquid water.
Venus also doesn’t have liquid water on the surface, but it does rain. The problem is it’s raining sulfuric acid.
Any probes we’ve tried sending to Venus have become dysfunctional within minutes.
If you count all the little nuts, bolts, loose wrenches and pieces of demolished satellites as satellites, then there’s a whole lot of junk floating around Earth. Thousands of pieces that pose a hazard.
Around the moon we have about three functioning spacecraft but have launched far more than that that have, over time, gone dead – perhaps crashed to the surface of the moon. Then we have the odd Juno spacecraft around Jupiter, the voyagers I and II and so on. We’ve put more space junk up there then anything else. This is a fairly accurate artist’s rendition of space junk around Earth.
The Russians have put several probes on Venus, the Americans and Europeans put a probe on Titan, we have probes on Mars, we flew a probe by Pluto and orbited Saturn for a long while before crashing deliberately. We presently have, as mentioned, the Juno spacecraft around Jupiter. We have hundreds of functioning satellites in orbit around Earth.
We spend 600 billion dollars every year on the military. What would happen if NASA had that kind of money? Here’s a very cool YouTube video that I love to watch!
Mechanical, intentional interstellar travel is unlikely since the distances are far too great to imagine. The best anyone could achieve is interplanetary travel within one’s own solar system. Therefore, if we pass the buck and say life didn’t start here but started somewhere else and arrived here, it would have had to arrive on a rock or asteroid as a microbe and somehow survive a fiery entry through Earth’s atmosphere and it would have had to survive the vacuum and temperature extremes of space. If the rock came from outside the solar system it would have had to survive a long, long time.