Black Holes: How Do We See That Which Gives Off No Light?

Stephanie La Massa, Space Telescope Science Institute
Black holes are the most enigmatic objects in the Universe, objects so dense that not even light can escape from them. A natural consequence of Einstein’s theory of general relativity, they have in the past been considered theoretical curiosities. However, observational evidence of black holes has become abundant over the past several decades.
Though black holes give off no light, we can infer their presence based on the effect they have on their surroundings. Dr. La Massa will highlight the clues we use to discover black holes from within our Galaxy to the edges of the Universe. Recent ground-breaking observations from the Event Horizon Telescope and gravitational waves have pushed the boundaries of our knowledge about black holes. Still, many important questions remain, which the next generation of ground and space-based telescopes will help answer.
- News from the Universe starts at 3:08
- Main talk starts at 12:22
Host: Frank Summers, Space Telescope Science Institute
Recorded live on Tuesday, November 1, 2022
More information: www.stsci.edu/public-lectures

[@alfredtetzlaf9163]

thank you very much for this very dedicated and substantial content - pls keep on with the excellent work...
I love your back to back indepth discussion of hubble and webb.😊
Great talk by SLM.👍

[@robyost6079]

This series of lectures deserves way more views. Thank you!

[@kenchesnut4425]

2g

[@Wtvldoc]

Remarkable! "We have come a long way baby"

[@Birbface]

Awesome

[@rhoddryice5412]

03:10 News
12:22 Introducing Stephanie LaMassa
13:50 Talk stars

[@markbass_trojanthinking]

Great talk

[@markbass_trojanthinking]

👍🏾👍

[@markbass_trojanthinking]

Thanks for like I thought I missed one !

[@deletefacebook8419]

I think that time literally moved faster at the beginning of the Universe. Given that energy follows the path of least resistance it can be said within reason that a higher density state would cause the potential actions within a given survey of energy waves to simply be much higher. Causing entropy to be much lower and therefor causing the natural cycle of things to be able to occur at more rapid rates. That is to say, that the waves of energy within these regions of space time would be operating at a much higher resonance corresponding to more distance being covered by their potential energy paths in a shorter amount of "time" in relevance to what we perceive to be the flow of order in our higher entropy state. The actions that proceeded the big bang would have literally consumed less energy in relevance to what is consumed now in order for ordered structures to propagate into the path of least resistance. Meaning that more energy consumption is occurring in relation to the way that we have evolved to compute the Universe.

[@deletefacebook8419]

this is why at the very least i think that our current understanding of the rate at which the Universe is expanding is quite literally relative, as well as the speed of light although many scientist would disagree with me lol. This is also atleast imo the only way or one of the only ways to explain hawkins radiation and the fact that we have not been able to detect gravitational memory imprints in the fabric of space time.

[@davidgwynn6004]

great talk, very informative. Thank you.

[@hubblespacetelescope]

Glad you enjoyed it!

[@steady3459]

WE HAVE PROVEN, THERE ARE THINGS THAT TRAVEL FASTER THAN THE SPEED OF LIGHT ! 🥴✌️

[@bleedleaf]

Thank you Stephanie for the awesome presentation! Again, Thomas, Grant, Frank, and everyone over there, thank you!
⎠^.^)⎠ ❤︎