Star wars isn't supposed to be sci-fi any more than lord of the rings is supposed to be historically accurate. To judge the films this way is to miss the point entirely.

Space expands, so objects that are currently 18 billion light years apart would not have been when the photon left.

You could try this for starters: https://en.wikipedia.org/wiki/...

Yeah, it's weird they can't get it right; I mean it's not exactly rocket science!

You don't need to prove something will definitely happen to support action to prevent it. You need only show there is significant enough risk to justify the cost of preventing it.

Pointing out that the simpsons already did it has also been done before https://en.wikipedia.org/wiki/....

The article is from 2017. Disney now has access to the characters it got with the Fox acquisition like x-men and fantastic four.

Normally when we're generating electricity from heat, we're taking advantage of the fact that heat naturally moves from hot areas to surrounding colder areas, increasing entropy. We use CPU fans because nature isn't redistributing the heat quickly enough to keep the CPU stable, so we're expending energy to speed up the process. We're basically doing the opposite of your idea out of necessity.

There are rings in which 2+2=99, for example integers modulo 5. Modular arithmetic has its real world uses too, like public key cryptography.

ln(x) is an antiderivative of 1/x, but so is ln(x)+c for any c in R. The example shows you need to remember the constant or you end up with nonsense.

If only it'd been Uranus...

They do call this one a hummingbird though: https://en.wikipedia.org/wiki/...

Well if history has taught me anything, then the answer is none. You just need to change the classification to exclude whoever you intend to persecute.

These percentages aren't as straight forward as they first appear. In a chimera, different parts of the body have different DNA. You might even be one yourself without knowing it, taking DNA from four parent cells. What weight are we giving to DNA of the brain, and what to other parts of the body in our metric? Also how is this percentage derived? A downs baby has an extra chromosome but it's a copy of an existing one. So what percentage difference do you assign between downs and non-downs people? If you look at the difference between human and chimp, you see chunks of DNA being repeated more in one than another, sometimes a bit gets copied and turned upside down and shoved in somewhere else. Depending on the metric you choose to handle these situations, you can come out with different percentages and it's not obvious which is the fairest.

If it's a "city killer" and you're warned early enough can you not choose to be somewhere else when it lands?