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Category: cosmology

Whether these different organisations want to land astronauts, install a human outpost or mine minerals and make rocket fuel on the moon, it still lacks an exceptional and important asset– A lunar radio Telescope. Why? Because this development will be uniquely poised to answer one of humanity’s greatest questions: What is our cosmic origin?
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All the lunar missions that are being planned along with all other missions that different organizations want to accomplish, will be of no use if we don’t seek answers to fundamental questions like “what is the universe made up of? What are we made up of?” And a telescope on the far side of the moon will help us answer these important questions!! So let’s take a look at why this is important and what NASA is planning to do about it.
As mentioned earlier the universe constantly beams its history to us. For instance, the information of what happened long ago in the universe is contained in the long length radio waves that are present everywhere throughout the universe and most likely hold the details about how the first black holes and stars were formed. But there’s a problem. Our noisy radio signals and our atmosphere block these signals from coming to the earth and we can’t read them. The far side of the moon is the best place in the inner solar system to monitor these low-frequency radio waves and help us in detecting certain faint ‘fingerprints’ that the big bang left on the cosmos. The problem with our earth bound telescopes is that they encounter too much interference for electromagnetic pollution caused by human activity, whether it is short-wave broadcasting or maritime communication. On the top of that our ionosphere blocks the longest wavelengths from reaching our earth-based telescopes in the first place. We need these signals to understand and learn whether our universe inflated rapidly in the first trillionth of a trillionth of second after the big bang.

This is the reason why NASA is in the early stages of planning what it would take to build an automated research telescope on the dark side of the moon. One of the most ambitious proposals is to build the Lunar Crater radio telescope or the LCRT
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A new study showing how the explosion of a stripped massive star in a supernova can lead to the formation of a heavy neutron star or a light black hole resolves one of the most challenging puzzles to emerge from the detection of neutron star mergers by the gravitational wave observatories LIGO and Virgo.

The first detection of gravitational waves by the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) in 2017 was a star merger that mostly conformed to the expectations of astrophysicists. But the second detection, in 2,019 was a merger of two whose combined mass was unexpectedly large.

“It was so shocking that we had to start thinking about how to create a heavy neutron star without making it a pulsar,” said Enrico Ramirez-Ruiz, professor of astronomy and astrophysics at UC Santa Cruz.

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In a rare non-magnetic kagome material, a topological metal cools into a superconductor through a sequence of novel charge density waves. Researchers have discovered a complex landscape of electronic states that can co-exist on a kagome lattice, resembling those in high-temperature superconductor.

The Computational Cosmology group of the Department of Astronomy and Astrophysics (DAA) of Valencia University (UV) has published an article in The Astrophysical Journal Letters, one of the international journals with the greatest impact in Astrophysics, which shows, with complex theoretical-computational models, that cosmic voids are constantly replenished with external matter.

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The Computational Cosmology group of the Department of Astronomy and Astrophysics (DAA) of Valencia University (UV) has published an article in The Astrophysical Journal Letters, one of the international journals with the greatest impact in Astrophysics, which shows, with complex theoretical-computational models, that cosmic voids are constantly replenished with external matter.

“This totally unexpected result can have transcendental implications, not only for our understanding of the large-scale structure of the , but on the settings for the creation and evolution of galaxies,” explains Vicente Quilis, director at the DAA and head researcher for the project.

“Cosmic voids are the largest structures in the cosmos, and knowledge on their creation and evolution is essential to understand the of the universe,” says Susana Planelles, co-director of the research. Studying them as a physical occurrence has always been extremely complex precisely due to being large volumes with very low material content. From an observational point of view, analyzing the few existing items inside them is very hard, and the theoretical modeling of these occurrences is no less complex, which is why highly simplified descriptions of these structures are used.

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Spoiler: We are still a ‘Type Zero’ civilization.

The Kardashev scale was extended to accommodate type IV and V civilization. Energy output in type V civilization would be tremendous. Possible wormholes, time travel, and teleportation. Breaking the second law of thermodynamics would be the easiest way to progress. Maxwell’s demon thought experiment presents this hypothesis.

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A Type V civilization would be advanced enough to to escape their universe of origin and explore the multiverse. Such a civilization would have mastered technology to a point where they could simulate or build a custom universe. They will have mastered the new laws of physics and have almost complete control over the fabric of reality. Now, humanity is basically impossible to destroy by its own inhabitants, which has reached the decillions. The Q Continuum from Star Trek The Daleks and Time Lord.

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Remember the philosophical argument our universe is a simulation? Well, a team of astrophysicists say they’ve created the biggest simulated universe yet. But you won’t find any virtual beings in it—or even planets or stars.

The simulation is 9.6 billion light-years to a side, so its smallest structures are still enormous (the size of small galaxies). The model’s 2.1 trillion particles simulate the dark matter glue holding the universe together.

Named Uchuu, or Japanese for “outer space,” the simulation covers some 13.8 billion years and will help scientists study how dark matter has driven cosmic evolution since the Big Bang.

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In order to explore the mysteries of our universe, we need to look at it in different ways. Astrophysics missions like SPHEREx and Euclid will use infrared astronomy to deepen our knowledge of unseen phenomena, such as inflation and dark matter. Join us as we explore how infrared observations are changing our understanding of the cosmos and its origins.

Speakers:
–Dida Markovic, Research Scientist, NASA/JPL
–Dr. Phil Korngut, Research Scientist at Caltech.
SPHEREx instrument scientist.

Host: marc razze, public services office, NASA/JPL

Co-host: kaitlyn soares, public outreach specialist, NASA/JPL

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“While there have been published doubts raised about the accuracy of some of this CMB data, taken at face value it appears we may not have the right understanding, and it changes how big the Hubble constant should be today,” Riess said at the time.

“This surprising finding may be an important clue to understanding those mysterious parts of the universe that make up 95% of everything and don’t emit light, such as dark energy, dark matter and dark radiation.” Given its breadth and scope, astronomers around the world have taken the findings of Riess and his colleagues very seriously. After all, in 2011 Riess had shared the Nobel Prize in Physics for the initial discovery that the universe wasn’t just expanding, but that the rate at which it was doing so was also increasing.

Erik Verlinde of the University of Amsterdam has spent much of his time since 2010 attempting to develop a totally new theory of gravity, one that explains such observations without the need to invoke the likes of dark matter and dark energy. This resulted in his theory of emergent gravity, so-called because gravity is not a fundamental force after all, but an emergent phenomenon, similar to temperature emerging from the movement of particles.

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We can consider white holes and black holes to be the two sides of the same coin. A perfect pair of antonyms. White holes first found their place, like many others, in Einstein’s theory of relativity. But it was left just there until theorists began pondering over its existence quite recently.

What is a white hole?

Insight, a white hole looks exactly like a black hole. It has mass, probably a ring of dust and gas around it. But the similarities end there. According to Carlo Ravelli, a theoretical physicist at the Centre de Physique Theorique in France, “It’s only in the moment when things come out that you can say, ‘ah, this is a white hole,”.

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