When a black hole is formed, one speculative but spectacular idea is that it gives birth to a new, ... [+] baby Universe. If this is the case, it might shed a new light on our own cosmic origins, with fascinating implications for what might occur inside the black holes that our Universe has subsequently formed.
When it comes to our understanding of the Universe, the 20th century was full of surprises. A little over 100 years ago, we thought that the Milky Way galaxy was home to everything we could see in the sky. We thought the Universe was static, unchanging, and possibly eternal, governed by Newton's law of universal gravitation.
Not to change the topic here:
What happens at the center of a black hole? | Space
The singularity at the center of a black hole is the ultimate no man's land: a place where matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down. And it doesn't really exist. Something has to replace the singularity, but we're not exactly sure what.
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It could be that deep inside a black hole, matter doesn't get squished down to an infinitely tiny point. Instead, there could be a smallest possible configuration of matter, the tiniest possible pocket of volume.
Gravitational-wave treasure trove reveals dozens of black hole crashes | Space
Although physicists only observed the first of these cosmic "chirps" in 2015, subsequent improvements in the detectors have opened up more and more of these signals to scientific study.
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"One key to finding a new gravitational-wave signal about once every five days over six months were the upgrades and improvements of the two LIGO detectors and the Virgo detector," Karsten Danzmann, director at the Max Planck Institute for Gravitational Physics in Germany, said in a statement .
Carlo Rovelli: Where does the stuff that falls into a black hole go? | New Scientist
THERE is something paradoxical in what we know about black holes. They have now become “normal” objects for astronomers. Astronomers observe them, count them and measure them. They behave exactly as Einstein’s theory predicted a century ago, when no one dreamed that such peculiar objects could actually exist. So, they are under control. And still, they remain utterly mysterious.
On the one hand we have a beautiful theory, general relativity, confirmed in spectacular manner by astronomical observations, which …
Many things are taking place:
Magnetic Fields on Earth: Black Hole-Sized Magnetic Fields
Think of a microwave running with nothing inside. It doesn’t spontaneously form a growing marshmallow. But if you put a marshmallow in there, now you can watch the marshmallow grow to many times its original size. Seeding the microtube reaction with a small magnetic field gives it something to blow up. In this case, the seed field is “by an external laser-plasma device such as a capacitor coil” also stimulated by a laser.
The scientists say their approach makes for more robust and practical magnetic fields partly because of the “geometrically unique” shape the mechanism induces. They explain:
Black hole: Astronomer explains what would happen if you fell into a black hole | Science | News
Black holes belong to the most massive objects in the Universe, and as such they have an intense gravitational pull. So strong is the gravity of a black hole than not even photons - light particles which are the fastest things in the Universe - cannot even escape their clutches.
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The power of the gravity of the black hole would be so strong and increasing so much that if you were to fall in to one, you would undergo a process called 'spaghettification'.
The Scariest Things in the Universe are Black Holes, Here's Why
Halloween is a time to be haunted by ghosts, goblins and ghouls, but nothing in the universe is scarier than a black hole.
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Black holes – regions in space where gravity is so strong that nothing can escape – are a hot topic in the news these days. Half of the 2020 Nobel Prize in Physics was awarded to Roger Penrose for his mathematical work showing that black holes are an inescapable consequence of Einstein's theory of gravity. Andrea Ghez and Reinhard Genzel shared the other half for showing that a massive black hole sits at the center of our galaxy .
Happening on Twitter
Did A Black Hole Give Birth To Our Universe? - https://t.co/QyaQDg17w1 by @StartsWithABang https://t.co/PJEh1Jm8yy universetoday (from Courtenay, British Columbia) Wed Nov 04 00:42:02 +0000 2020
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