Strange

Phew. Not just me then.

You get your scientific info from action movies? I'm not sure that is the most reliable source.

I think you are taking this too literally. I said it was "news". That implies it is new. Hence it can be described as a discovery. That's all. What beecee said was an indirect quotation; he used his own words to paraphrase my comment (and then added his own thoughts).

This was true in Rome as well. Slaves had rights protected by law and could take their owners to court for redress.

It seems to have increased massively in the Trump Era: "Trump has admitted to molesting women" "What about Bill?" "Trump colluded with the Russians" "What about Hilary?" "Trump lies all the time" "What about Pinocchio?" Worse than that - they cut their balls off.

Also known as "what-aboutism". I do wonder if that was the OP's point. But I am never sure what the OP's point is ...

This doesn't take much. A plumb line to tell the direction. A spring balance to measure the magnitude. Of course, unless the spaceship has windows, he wouldn't be able to tell if he was accelerating or still sat on the launchpad! I don't understand this. If the spaceship is heading directly towards the star, then why wouldn't that be the direction of acceleration? (Apart from the fact that the star is moving, so the spaceship might be aiming ahead of it to where it will be on arrival) That is exactly what we measure when standing stationary on the surface of the Earth. But I'm not sure I understand the question ...

What does this have to do with politics? There have always been slaves of all races and colours. What did you want to discuss? The history of slavery in different countries? I'm surprised you haven't mentioned ancient China...

Isn't that, at least partly, the point of being a professor? At least they have read a book. There is some doubt about Trump's reading ability. And why is reading a book a bad thing? But I guess if you are a Trump supporter, education is not considered a good thing. He started with a lot of money. He has been bankrupt six times. It is not clear that he is a good businessman, despite his claims.

No need to apologise. The "Speculations" section of the forum is for people to present their own "personal" theories for an informal review and feedback. (99.9% of the time it is full of nonsense.) If you are not actively advocating a speculative theory or hypothesis it is OK to post it in the appropriate part of the forum (New, Physics, etc) for discussion.

https://theconversation.com/our-study-suggests-the-elusive-neutrino-could-make-up-a-significant-part-of-dark-matter-94051 Although, less than 5%

Science is not a religion. It is a way of creating and testing ideas about the world.

Nothing to apologise for and no reason to have the post deleted. It is an interesting news story. There is nothing speculative in this post. (Which is why it has been moved to Science News. Because it is news. About science.)

I don't know where you got this story from, but it doesn't seem to be very accurate. (Note, when you post stuff from elsewhere, it is a good idea to provide a link to the source) There seems to be a lot of nonsense about this one the web. Here is the original paper it is referring to, I think: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017GL076007 And an overview here: http://www.rochester.edu/newscenter/new-data-helps-explain-recent-fluctuations-in-earths-magnetic-field-302242/ It has always been hazardous. And satellites that regularly go through the area (including the Hubble telescope and the ISS) take precautions. "these orbits take satellites through the anomaly periodically, exposing them to several minutes of strong radiation, caused by the trapped protons in the inner Van Allen belt. The International Space Station, orbiting with an inclination of 51.6°, requires extra shielding to deal with this problem. The Hubble Space Telescope does not take observations while passing through the SAA.[9] Astronauts are also affected by this region" https://en.wikipedia.org/wiki/South_Atlantic_Anomaly This has nothing to do with the story. "the in-air bird deaths aren't due to some apocalyptic plague or insidious experiment—they happen all the time, scientists say. The recent buzz, it seems, was mainly hatched by media hype." https://news.nationalgeographic.com/news/2011/01/110106-birds-falling-from-sky-bird-deaths-arkansas-science/

I saw this too. Very interesting. I was going to post about it but you beat me to it!

Make America Grammatical Again!

You need to provide some evidence for this. By whom?

Only if he awards it to himself. Or if it is "The Great X" where X = "Deceiver", "Failure", etc. Did you learn grammar from him?

Lets hope no one sees that as a challenge ...

Business opportunity?

I don't know if you have seen it but this brilliant video was posted in another thread. It might help you makes sense of all this:

That is brilliant. I am often sceptical of videos as a means of presenting information but that says everything that needs to be said in a really clear way that makes sense. (It doesn't quite answer the origin question though, because it doesn't address space-time curvature but it is a good first step along the way.)

It is confusing because, algebraically, m/s/s looks like it should re-arrange as ms/s. But that is just because the m/s/s notation is misleading ("wrong").

Can you explain how you think it should be taken into account? For example, are you thinking about the distance changing between when the light was emitted and when we receive it?

Firstly, science doesn't really work by proving things. Instead what it does is create models (theories) that attempt to describe or explain how things work. Those models are then tested by experiment. So, we have a model that describes gravity and other effects in terms of the curvature of the geometry of space and time. All the experiments done so far produce results that are in agreement with that theory. So we accept it as a good model. We have no model that says that energy can be directly affected by gravity (other than through space and time being curved). So there is no evidence for that idea. If you are looking for an intuitive way of visualising this, I think you might be out of luck! But we can measure it happening. Clocks at different altitudes run at different speeds because time runs at a different rate depending on their position in the gravitational field. The easier thing to visualise is special relativity. This doesn't involve curvature. But we do see the clocks of people moving relative to us running slow. One way of visualising this is to think that everything always moves through space-time at the same rate. If something is stationary (relative to you) then all of that movement is through time. If the object starts moving through space, then this "trades off" some of that movement through time and so their clocks run slow. All movement is relative. So something can be static relative to you, but they will be moving relative to something else.