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Archive for the ‘cosmology’ category: Page 29

Jul 20, 2024

A 13.3bn years old oxygen signal indicates a star formed just 250 million years after the Big Bang

Posted by in category: cosmology

The Atacama Large Millimeter/submillimeter Array (ALMA) is not your typical telescope. Instead, ALMA, located in northern Chile’s high-and-dry Atacama Desert, is a radio telescope comprised of 66 high-precision antennas that work in perfect harmony. When ALMA’s antennas (which range in diameter from 7 to 12 meters) are deployed in various ways, the array may zoom in on some of the universe’s most distant cosmic objects while also recording images crisper than those generated by the Hubble Space Telescope.

First starlight

In a research published in the journal Nature, an international team of astronomers utilized this amazing array to investigate MACS1149-JD1, an exceedingly distant galaxy. The team was shocked to uncover tiny signs of ionized oxygen emitted about 13.3 billion years ago (or 500 million years after the Big Bang).

Jul 18, 2024

Spiral Multiverse Theory Challenges Big Bang, Proposes Network Of Interconnected Universes

Posted by in categories: computing, cosmology, singularity

The Spiral Multiverse Theory, proposed by computer engineer Tejas Shinde, challenges the conventional Big Bang theory by suggesting a continuous spiral pattern universe originating from a single point, or singularity. This theory posits that each universe begins with its own bang, forming a network of interconnected universes expanding in a spiral shape. The theory introduces the concept of interdimensional quasars as portals for multiverse travel and suggests each universe undergoes its own inflation without observable changes in the cosmic microwave background. This new perspective on cosmic evolution could open up new avenues for scientific exploration and understanding.

The Spiral Multiverse Theory, proposed by Tejas Shinde, a computer engineer, suggests a continuous spiral pattern universe originating from a single point, known as a singularity. This theory challenges the conventional Big Bang theory, which posits a singular explosive origin for the universe. Instead, the Spiral Multiverse Theory proposes that each universe begins with its own bang, forming a network of interconnected universes. This network, or multiverse, expands in a spiral shape, with the width and length of the arms expanding as the universe expands. The point where all universes connect is referred to as the Everyverse.

The Spiral Multiverse Theory offers a fresh perspective on cosmic evolution and presents a potential path for practical research. It introduces the concept of interdimensional quasars as portals for multiverse travel. The theory also suggests that each universe undergoes its own inflation without observable changes in the cosmic microwave background, a remnant radiation from the Big Bang.

Jul 18, 2024

The Universe’s Second, Bigger Bang

Posted by in categories: cosmology, particle physics

Visit https://brilliant.org/scishow/ to get started learning STEM for free. The first 200 people will get 20% off their annual premium subscription and a 30-day free trial.

In 2023, a team of researchers proposed that our universe experienced not one, but TWO Big Bangs about a month apart from one another. The first for the stuff described by our Standard Model of Particle Physics. And the second for that ever elusive Dark Matter and all the particles associated with it.

Continue reading “The Universe’s Second, Bigger Bang” »

Jul 18, 2024

🌄 Dark Matter, Does it Matter? Ft. Astrophysicist, Ethan Siegel

Posted by in category: cosmology

The Sunny Spot | Sunny Shell speaking with guest, Ethan Siegel. Dr. Ethan Siegel’s discussions often emphasize the broader implications of habitable zones, in…

Jul 18, 2024

In the last 25 years, black hole physicists have uncovered the unimaginable

Posted by in categories: cosmology, physics

Even Albert Einstein himself didn’t believe we’d be able to detect gravitational waves from the merger of two black holes.

Jul 17, 2024

Omega Centauri: A Galaxy Core Frozen in Time Reveals Its Black Hole

Posted by in categories: cosmology, evolution

Researchers have confirmed the presence of an intermediate-mass black hole in the core of Omega Centauri, a cluster that once formed the heart of a separate galaxy. This finding enhances our understanding of black hole evolution and galaxy dynamics. (Artist’s concept.) Credit: SciTechDaily.com.

Researchers confirmed an intermediate-mass black hole in Omega Centauri’s center, supporting theories of its origin as a distinct galaxy core merged with the Milky Way.

Continue reading “Omega Centauri: A Galaxy Core Frozen in Time Reveals Its Black Hole” »

Jul 16, 2024

Why Humanity Needs Science, not Religion | Carl Sagan

Posted by in categories: cosmology, science

Discover Sagan’s unique blend of scientific curiosity and philosophical introspection, as he seamlessly navigates the realms of cosmology and the human condition.

If you would like to support my work financially, you can donate here:
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All contributions are greatly appreciated!

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Jul 15, 2024

Faster Than Light: New Dark Matter Findings Challenge Classical Physics

Posted by in categories: cosmology, particle physics, quantum physics, space travel

Dive into the world of tachyons, the elusive particles that might travel faster than light and hold the key to understanding dark matter and the universe’s expansion. Join us as we explore groundbreaking research that challenges our deepest physics laws and hints at a universe far stranger than we ever imagined. Don’t miss out on this thrilling cosmic journey!

Chapters:
00:00 Introduction.
00:39 Racing Beyond Light.
03:26 The Tachyon Universe Model.
05:57 Beyond Cosmology: Tachyons’ Broader Impact.
08:31 Outro.
08:44 Enjoy.

Continue reading “Faster Than Light: New Dark Matter Findings Challenge Classical Physics” »

Jul 15, 2024

Astronomers see a Massive Black Hole Awaken in Real Time

Posted by in categories: cosmology, physics

In late 2019 the previously unremarkable galaxy SDSS1335+0728 suddenly started shining brighter than ever before. To understand why, astronomers have used data from several space and ground-based observatories, including the European Southern Observatory’s Very Large Telescope (ESO’s VLT), to track how the galaxy’s @brightness has varied. In a study out today, they conclude that they are witnessing changes never seen before in a galaxy – likely the result of the sudden awakening of the massive black hole at its core.

“Imagine you’ve been observing a distant galaxy for years, and it always seemed calm and inactive,” says Paula Sánchez Sáez, an astronomer at ESO in Germany and lead author of the study accepted for publication in Astronomy & Astrophysics. “Suddenly, its [core] starts showing dramatic changes in brightness, unlike any typical events we’ve seen before.” This is what happened to SDSS1335+0728, which is now classified as having an ‘active galactic nucleus’ (AGN) — a bright compact region powered by a massive black hole — after it brightened dramatically in December 2019 [1].

Some phenomena, like supernova explosions or tidal disruption events — when a star gets too close to a black hole and is torn apart — can make galaxies suddenly light up. But these brightness variations typically last only a few dozen or, at most, a few hundreds of days. SDSS1335+0728 is still growing brighter today, more than four years after it was first seen to ‘switch on’. Moreover, the variations detected in the galaxy, which is located 300 million light-years away in the constellation Virgo, are unlike any seen before, pointing astronomers towards a different explanation.

Jul 14, 2024

Investigating the Origins of the Crab Nebula

Posted by in categories: cosmology, sustainability

A team of scientists used NASA’s James Webb Space Telescope to parse the composition of the Crab Nebula, a supernova remnant located 6,500 light-years away in the constellation Taurus. With the telescope’s MIRI (Mid-Infrared Instrument) and NIRCam (Near-Infrared Camera), the team gathered data that is helping to clarify the Crab Nebula’s history.

The Crab Nebula is the result of a core-collapse supernova from the death of a massive star. The supernova explosion itself was seen on Earth in 1,054 CE and was bright enough to view during the daytime. The much fainter remnant observed today is an expanding shell of gas and dust, and outflowing wind powered by a pulsar, a rapidly spinning and highly magnetized neutron star.

The Crab Nebula is also highly unusual. Its atypical composition and very low explosion energy previously have been explained by an electron-capture supernova — a rare type of explosion that arises from a star with a less-evolved core made of oxygen, neon, and magnesium, rather than a more typical iron core.

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