Sarah Rugheimer
๐ค SpeakerAppearances Over Time
Podcast Appearances
And now we have this really hellish place to go that we can barely visit.
So Venus, like Earth, you know, has volcanism on it.
And we know this because of these surveys that have been done of Venus radio maps of the surface.
It's a very young surface.
So Mars is very old.
We see lots of cratering.
We think some of these craters, the amount of craters similar to our moon, it's maybe the surface is for over four billion years old, both the moon and Mars.
But Venus is different.
It seems like Venus underwent this catastrophic resurfacing maybe half a billion years ago, which means that volcanism is still active on the planet and it erased a lot of the craters.
And so how we are able to date solar system bodies is by kind of the number of craters.
You know, Earth doesn't have a lot of craters on the surface, right?
We have tectonics that erase that record.
And same with Venus.
Venus has a very young surface.
So it means volcanism is active.
And now we have evidence of lava tubes is the short of it.
I mean, it seems to be more this episodic nature on Venus.
So because Venus doesn't have oceans anymore, the tectonic activity is different.
And so it seems to be kind of this catastrophic resurfacing events that happen simultaneously.