The Elusive Darkness of the Universe
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- Опубликовано: 26 авг 2024
- All we can see makes up just 5% of the Universe. The rest of the vast darkness is not as empty as we once thought, but instead filled with dark matter and dark energy. How do we know they are there? Can we find evidence for them? And what has all this got to do with Einstein?
Recorded for World Science Festival Brisbane 2022. Find out more at worldsciencefestival.com.au
this makes me appreciate Brian. he is just very very good at conducting these interviews. idk if it's the vast knowledge he possesses or his interview skills but he never lets the listeners attention drop..
Oof, there’s some weirdness in the timing of the speakers that I wish the moderator handled differently. He did his best but the cringe hurt sometimes 😅 Once I saw the topic, I was super excited to watch this session, but was delighted to see it discussed on a panel of predominantly women!
Loved hearing from all the speakers, but personally I ADORED Katie’s explanations - really made it “make sense” imo. It’s priceless to hear from someone with so much experience, such as herself, who can explain very complex concepts but communicate them in such a way that it’s easily digestible for folks simply passionate about science (but who are not in the field), yet without losing any of the integrity within the explanation. Lindsey’s more practical/tactical responses made it feel more “real” and imagining how these concepts can be compared to things in our livable experience; and while I feel like Nicole was quicker with the more mathematical, abstract explanations that (for me) but I can tell she’s got the numbers in her pocket ready to go.
Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it. Terry Pratchett
Space can travel faster than light...so the Universe's Expansion Rate is faster than light from stars/galaxies outside the observable Universe .Eventually this spacial expansion will grow so much that all the stars we see in the night sky now will "disappear". Similarly , in a blackhole, Space moves faster than light towards the interior/Singularity...so light from a sun dragged in can never outpace the blackhole spacial speed .Light is still the fastest thing moving through Space , because movement of Spacial Expansion isn't something moving through Space.
then it just means darkness is always there, it didn't need to travel when it was created right there
The universe is actually dark. Light can’t be seen until it hits a sensor, biological or man made, or until it hits a gaseous substance. However photons are everywhere.
this moderator is so annoying. anyway in our 5 % of the universe we are the only proven intelligent life ( loosely)
and we cannot see the rest of the universe. well could that not mean
that mean that 95 % of the universe cannot see us , so where should the universe actually have the majority of intelligent life and physics ?
Vera Rubin never won the Nobel Prize, a tragic and scandalous oversight. At the very least, she deserves a posthumous award of the Nobel Prize for her pioneering work.
Vera Rubin didn't discover dark matter. Fritz Zwicky discovered and named dark matter a quarter of a century before Rubin made her similar observations.
Vera Reuben would not be the only female astronomer slighted. Henrietta Leavitt provided a valuable tool that enabled Edwin Hubble to prove galaxies are separate bodies from the Milky Way.
Unfortunately, the rules governing the Nobel preclude posthumous awards.