3 ms·
Hard to imagine a civilization advanced enough to trigger a runaway greenhouse effect and yet not having achieved a space program with all that energy usage. E
by garmaine 6y ago
Hard to imagine a civilization advanced enough to trigger a runaway greenhouse effect and yet not having achieved a space program with all that energy usage.
EDIT: Venesian satellites would have been detected, if that's not clear.
- rsynnott 6y agoAfter 750 million years? I doubt any of ours will be detectable after that time, at least not without a very careful search (which hasn’t been done for speculative Venusian ones).
- spideymans 6y agoI’d also assume that if a Venusian civilization was capable of releasing satellites, they also likely generated an abundance of space junk which, over the course of hundreds of millions of years, would completely tear apart any trace of these satellites.
- cgriswald 6y agoIt’s be quite a bit easier to trigger a runaway greenhouse effect at 0.74 AU. In addition, besides needing a boost to maintain orbit (solar panels that function for 750 million years?) some forces have acted to slow and reverse Venus’ rotation and it is hard to imagine satellites wouldn’t be significantly affected over long time scales. A space program isn’t necessarily a natural consequence of CO2 production anyway. That might be especially true for creatures who don’t have the benefit of a moon.