lemming

The distance does matter. There are ways of measuring/estimating distances other than red shift. So basically you plot the distances against the red shift and if the relation is linear, the rate of expansion is constant, and that isn't the case. Interestingly, it seems lately that the rate is different based on which way of measuring you use. Something is probably wrong and nobody knows what. That is exciting, because this is how you discover new things.

I might be wrong, but is it a list of countries with a leader of some sort that met Trump and was nice to him?

I've been hearing about this for at least 15 years I think. Is there something new?

Have a look at Factorio. It's DRM free and you can easily spend hundreds or thousands of hours on it if you like it. Try the free demo first. Also keep in mind that it's never on sale (or always, depends how you look at it). Be warned though, it's very addictive.

In the sense that it isn't particles we know about, can describe and sort of understand, as I wrote. Plus you can't touch it. You didn't say what you mean by physical, so I tried 4 different definitions I thought you might mean.

It also depends how you define physical matter.

If it's something you cam touch, then there definitely is, starting with neutrinos.

If you mean particles we know about, can describe and sort of understand, then there's dark matter, which is probably particles we don't know yet, but have several candidates we didn't manage to confirm or disprove yet. They can only interact by gravitational (and perhaps weak?) force.

If you mean something we know at least something solid about, there's dark energy, which isn't absolutely 100% certain that it exists, but is widely accepted.

If you mean something physics doesn't detect and try to explain, then obviously not.

Thank you, you're the best. It's the eyes for me, the dark pattern around the short-eared's eyes is very distinctive. Though I admit the lack of plumicorns also made me suspicious, I don't remember seeing an image of long-eared with plumicorns down before. The new image is great!

Beautiful. But isn't the second image a short eared owl?

That would be an awesome piggy bank, but British Museum in particular is doing pretty well on this front compared to many other museums, their souvenir shops have at least some. Not enough for me to be completely satisfied, but enough not to be completely disappointed, which is pretty good, relatively speaking.

If you're interested in shit in pristine untouched places, guess what Apollo astronauts did with their shit on the moon?

I heard from an expert that the usual infection comes from insufficiently washed home-grown vegetables contaminated by mouse droppings.

Lab animals don't just run around. If they escape, there's a serious problem in the research facility. Their teeth are only a concern for the researchers working with them.

Everyone would be happy if we had an easier model than animals. If organoids could give us all the answers we get from lab animals, all the scientists would be happy. Not only would it get rid of many ethical issues (and associated administrative), it would also be cheaper. Sadly, it's not the case and we cannot effectively replace lab animals by other model systems. Not for many applications anyway.