First, no object could be accelerated to that speed. Relativistic effects make that impossible. However, gravity waves move at the speed of light so there is some delay in gravitational effects. I'm not a physicist, but I'm pretty sure that if your sun-sized object shot through the solar system at 99.9999% the speed of light, and passed between the Earth and the Sun, it would take about 4 minutes for the object's gravity to be felt by either the Earth or the Sun.
Again, not a physicist, so here's a bunch of words that sum up to "maybe."
With the object moving so fast I'm not sure we'd notice anything much. We would only be in it's gravitational field for a very short time, but it might be long enough to change Earth's orbit, someone with better math skills will need to field that one.
As for heating the Earth, again that's a maybe. Gravity is stronger the closer you are to the center of mass. So the near side of the Earth will feel the pull of the object much more strongly than the further side. That will make the Earth want to stretch towards the object as the near side falls towards the object faster than the far side. It would be very slight, think egg-shaped but not to a noticeable degree, but it could be bad enough.
This is called a tidal effect and would generate some heat if we're in the gravity well of the object for long enough. It would also cause fault lines to pop all over the globe. The object would shoot by very quickly though at 99.9999c so we might be spared the worst of the effects. Again, someone with better math skills could give a more accurate answer.
FYI tidal effects are why the moons of the gas giants aren't frozen ice balls. The constant flexing as they orbit their planet generates tremendous amounts of heat.
Temperature is a measure of kinetic energy at the molecular/atomic level. That said, the gasses falling into a black hole would likely reach such hypothetical temperatures as they near the event horizon.
I’m in NorCal and the weather has been all over the place this winter. It is hard to get a reliable forecast, sometimes even for the same day. I was wondering if it has something to do with the weather prediction models that were built before the climate change?
There are other reasons besides it being apocalyptic that climate scientists might consider the model less useful than others. This video rebuttal to the video you posted explains some of those reasons quite well. The rebuttal is from Dr. Adam Levy who is a climate scientist. I mention this only because Dr. Sabine Hossenfelder, the maker of your video, actually has a degree in physics, not climate science. One should be very cautious when considering opinions of people who are speaking outside their field of expertise. While she may be an expert in her own field, she is not a climate scientist.
People talk of potential human flight on planets. Somewhere in the recesses of my mind I still wear my inner 5 year old’s caped Superman pajamas, stressing over how many stairs one must jump from to take flight. So is it possible to flappy bird a flying monkey?
Five House Democrats led by Alexandria Ocasio-Cortez of New York wrote to the US attorney general, Merrick Garland, to demand a federal investigation of the conservative supreme court justice Clarence Thomas, over his acceptance of undeclared gifts from billionaire rightwing donors....
It isn’t smoke and mirrors. They are making as big a deal out of it as they can because they don’t have the votes to do more. Calling attention to this criminal behavior is simply the best they can do because they, as you point out, don’t have the votes to do more. And stirring up their base if a good thing if it gets more progressive voters to the polls and gets more progressive representation in government.
[Physics] Does gravity have 'elasticity'? If a solid sun-sized object zooms across space at the speed of light, then abruptly stops, does it take gravity some time to 'settle' around it?
Is it a stable/static effect no matter what, or is it a bit more stretchy/bouncy depending on how the object is behaving?...
Is there a temperature so hot that relativistic effects are noticeable?
Is climate change affecting weather forecasting?
I’m in NorCal and the weather has been all over the place this winter. It is hard to get a reliable forecast, sometimes even for the same day. I was wondering if it has something to do with the weather prediction models that were built before the climate change?
Can humans reach near neutral buoyancy in a gas that is safe to breathe and contains adequate oxygen?
People talk of potential human flight on planets. Somewhere in the recesses of my mind I still wear my inner 5 year old’s caped Superman pajamas, stressing over how many stairs one must jump from to take flight. So is it possible to flappy bird a flying monkey?
AOC leads call for federal ethics investigation into Clarence Thomas ( www.theguardian.com )
Five House Democrats led by Alexandria Ocasio-Cortez of New York wrote to the US attorney general, Merrick Garland, to demand a federal investigation of the conservative supreme court justice Clarence Thomas, over his acceptance of undeclared gifts from billionaire rightwing donors....