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And then like 10 years later they’ll go “oh actually that is not a planet”
Yeah
So why did you fully lie and do TV shows and shit based on it lmao
Bullshit at all levels
We haven’t even explored all the oceans on earth and can barely predict the weather and yet an astrophysicist will tell you (completely invent) the chemical composition and weather patterns of planets light years away. And then like 10 years later they’ll go “oh actually that is not a planet” Yeah So why did you fully lie and do TV shows and shit based on it lmao Bullshit at all levels
My prior experience with science popularizers is that they are typically telling a potential, and either objectively likely or subjectively hoped for, narrative plausibly supported by the evidence.
"Science literacy" is one of those squishy concepts that lets folks give grace and continually learn and improve the view of the universe.
Because like many, I never lost my inner 11 year old and HOW COOL IS IT THAT WE CAN OBSERVE A BLACK HOLE?!?
Earlier quoted context omitted.
But that 20m year old light is in our past light cone; we can say it is in our past. If it is not in our light cone, we cannot communicate any temporal info so we cannot say if it’s now, past or future in reference to us as observer.
I think "something that happened 20M years ago" is still wrong. One of the consequences of special relativity is there is no such thing as "simultaneous" events very far apart. In other words, if we went back 20M years on Earth we could not meaningfully say the black hole event is happening "right now".
Someone sends an email or speaks on a voice call on the other side of world and a receiver still gets that note at the speed of light, there is slight latency. It's still completely reasonable to measure that latency as we can effectuate improvements to our machines and networks when it increases. The same as if someone wrote a letter in the 1860s and the horses were sick, causing a delay. Simply because information was received by us, the common understanding is that the notification was sent previously, because that is how cause and effect work.
Earlier quoted context omitted.
Light is not a particle, nor is it a wave. However, under some circumstances it does behave like a particle - we even have a name for that (photon). However for purposes of this type of discussion - how it travels long distances - we need to look at the wave properties of light. The particle properties are more interaction-based. Light moves at the speed of causality - C - so it does not experience time. Therefore li…
> Light moves at the speed of casualty - C C is coulombs And casualty is a dead person