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In General Relativity, white holes are just as mathematically plausible as black holes. Black holes are real; what about white holes?

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Spacedock delves into a powerful but lesser known sci-fi space weapon.

Continue reading “The Deadliest Hard Sci-Fi Weapon You’ve Never Heard Of (Macrons, Dust Guns)” »

A stunning Hubble Space Telescope image shows the chaotic and densely packed stars of the globular cluster NGC 6355.

The globular cluster is located around 31,000 light-years from Earth in the inner region of the Milky Way — so deep into our galaxy that it is just 4,600 light-years from our galaxy’s central supermassive black hole, Sagittarius A*.

One of Stephen Hawking’s most famous ideas has been proven to be right thanks to the ripples in space-time that were caused when two black holes far away merged. Hawking got the black hole area theorem from Einstein’s theory of general relativity in 1971. It says that a black hole’s surface area can’t go down over time. The second law of thermodynamics says that the entropy, or disorder, of a closed system must always go up. This rule is important to physicists because it seems to tell time to go in a certain direction. Since a black hole’s entropy is related to its surface area, both must always go up.

According to the new study, the fact that the researchers confirmed the area law seems to show that the properties of black holes are important clues to the hidden laws that run the universe. Surprisingly, the area law seems to go against one of the famous physicist’s proven theorems, which says that black holes should evaporate over very long periods of time. This suggests that figuring out why the two theories don’t match up could lead to new physics.

“The surface area of a black hole can’t get smaller, which is similar to the second law of thermodynamics. It also has a conservation of mass, which is similar to the conservation of energy, said the lead author, an astrophysicist from the Massachusetts Institute of Technology named Maximiliano Isi. ” At first, people were like, ‘Wow, that’s a cool parallel,’ but we quickly figured out that this was very important. The amount of entropy in a black hole is equal to its size. It’s not just a funny coincidence; they show something important about the world.” The event horizon is the point beyond which nothing, not even light, can get away from a black hole’s strong gravitational pull. Hawking’s understanding of general relativity is that a black hole’s surface area goes up as its mass goes up. Since nothing that falls into a black hole can get out, its surface area can’t go down.

The results of new simulations negate the argument that some objects thought to be black holes are instead hypothetical exotic systems called bosonic stars.

Experts assembling sPHENIX, a state-of-the-art particle detector at the U.S. Department of Energy’s Brookhaven National Laboratory, successfully installed a major tracking component on Jan. 19. The Time Projection Chamber, or TPC, is one of the final pieces to move into place before sPHENIX begins tracking particle smash-ups at the Relativistic Heavy Ion Collider (RHIC) this spring.

The TPC is a gas-filled detector that, combined with the detector’s strong magnetic field, allows nuclear physicists to measure the momentum of charged particles streaming from RHIC collisions. It is one of many detector components that nuclear physicists will use to glean more information about the quark-gluon plasma (QGP)—a primordial soup made up of matter’s fundamental building blocks, quarks and gluons.

“QGP existed at the dawn of the universe some 14 billion years ago, about a millionth of a second after the Big Bang,” said Thomas Hemmick, a physicist at Stony Brook University (SBU) and a collaborator on RHIC research “RHIC’s collisions and sPHENIX’s ability to capture snapshots of particles traversing the QGP will help scientists understand how quarks and gluons cooled and coalesced to form the protons and neutrons that make up the atomic nuclei of all visible matter in the universe today.”

Probably not but who knows in a million years?

Whether other universes are membranes floating in space, or a quirk of quantum mechanics, this is how physicists think we’ll traverse the multiverse.

https://youtube.com/watch?v=V8cPdjO3a_U

Find out what the world will be like a million years from now, as well as what kind of technology we’ll have available.
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Timestamps:
0:00 No Physical Bodies.
1:51 Wormhole Creation.
2:44 Travel At Speed Of Light.
3:21 Type 3 Civilization.
4:52 Gravitational Waves.
5:46 Computers the Size of Planets.
6:56 Computronium.

Continue reading “Future World: A Million Years Later — Artificial Intelligence Tech That Will Change The Universe” »

Evolution’s rapid pace after the Cambrian explosion

Though the work of Schopf and other paleobiologists continues to fill in the Precambrian fossil record, questions remain about the pace of the Cambrian explosion. What triggered life to evolve so fast?

The question has intrigued scientists of many disciplines for decades. Interdisciplinary collaboration has wrought a wealth of evidence from diverse perspectives — geochemical, paleoenvironmental, geological, anatomical, and taxonomic — that describes how biological organisms evolved in concert with changing environmental conditions.