steelcryo

steelcryo t1_jb9nso4 wrote

The other comments have already answered the question, but I'm going to add in a bit of context that's really obvious, but rarely thought about and that is that the moon is massive.

We often think of the moon as quite small, because we see it in the sky all the time and it looks small. Then we get these really high resolution pictures of it, normally something you can't do at great distances. Which further increases the perception that the moon is quite small.

Truth is, the moon is huge. Compared to the Earth, it's small, but as a physical entity, it's pretty big. Now I'm saying all this to give some comparison to the main question.

This is the Tycho crater. It's not the biggest crater on the moon, but it is one of the most visually distinct in that you can easily see the edges of it. That crater looks fairly small, but is actually 83km in diameter. So if that's how small something 83km across looks, it puts into scale just how tiny something as small as a rocket/lander would be.

Yes, telescopes can magnify much more than that picture, but it gives a good sense of the scale of what you are actually trying to look at.

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steelcryo t1_izj1l5x wrote

One of the main reasons you don’t hear so much about ocean diseases compared to land based ones is because not many of the ocean ones can spread to humans. They need aquatic environments to survive, so don’t often spread across land to become an issue for humans. Like most things in life, if it doesn’t effect us, we talk about it less.

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