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Jun 24, 2024

Astronomers find most Distant Galaxy using James Webb Space Telescope

Posted by in category: cosmology

An international team of astronomers today announced the discovery of the two earliest and most distant galaxies ever seen, dating back to only 300 million years after the Big Bang. These results, using NASA’s James Webb Space Telescope (JWST), mark a major milestone in the study of the early universe.

The discoveries were made by the JWST Advanced Deep Extragalactic Survey (JADES) team. Daniel Eisenstein from the Center for Astrophysics | Harvard & Smithsonian (CfA) is one of the team leaders of JADES and Principal Investigator of the observing program that revealed these galaxies. Ben Johnson and Phillip Cargile, both Research Scientists at CfA, and Zihao Wu, a Harvard Ph.D. student at CfA, also played important roles.

Because of the expansion of the universe, the light from distant galaxies stretches to longer wavelengths as it travels. This effect is so extreme for these two galaxies that their ultraviolet light is shifted to infrared wavelengths where only JWST can see it. Because light takes time to travel, more distant galaxies are also seen as they were earlier in time.

Jun 23, 2024

Can Black Holes Be Created From Pure Light? New Paper Challenges Theory

Posted by in category: cosmology

Squeeze enough stuff into one spot, space-time itself will pucker up in a sweet cosmic kiss known as a black hole.

As far as Einstein’s sums are concerned, that ‘stuff’ includes the massless glow of electromagnetic radiation. Given E = mc2, which describes the equivalence between mass and energy, the energy of light itself should – in theory – be capable of creating a black hole if enough of it is concentrated in one spot.

Before you crack out the big-gun lasers and punch some holes into the Universe’s floorboards, there’s one thing researchers from the Complutense University of Madrid in Spain and the University of Waterloo in Canada want you to know.

Jun 23, 2024

The Cosmological Constant Problem: a Crisis in Physics

Posted by in categories: cosmology, quantum physics

What is Dark Energy? A mysterious substance that fills space and causes it to expand is Dark Energy .70% of the universe’s energy is in the form of ‘dark energy’

Jun 23, 2024

‘Awakening’ of a black hole witnessed for the first time

Posted by in category: cosmology

In late 2019, the previously unremarkable galaxy SDSS1335+0728 unexpectedly brightened, prompting astronomers to investigate the cause using data from various observatories, including the European Southern Observatory’s Very Large Telescope (ESO’s VLT).

The study, recently published in the journal Astronomy & Astrophysics, suggests an unprecedented event: the sudden awakening of the massive black hole at the galaxy’s core.

“Imagine you’ve been observing a distant galaxy for years, and it always seemed calm and inactive,” said Paula Sánchez Sáez, an astronomer at ESO.

Jun 23, 2024

Rajendra Gupta On Tired Light and the REAL Age of the Universe [Ep. 431]

Posted by in categories: cosmology, education, physics

Join my mailing list https://briankeating.com/list to win a real 4 billion year old meteorite! All.edu emails in the USA 🇺🇸 will WIN!Is the universe twice as old as we thought?Current estimates suggest that the Big Bang occurred 13.8 billion years ago. But today, we’re joined by Rajendra Gupta, a luminary in the field of cosmology who claims that the universe is actually 26.7 billion years old. I’ve invited him on the show so he can make a case for his claims!Professor Gupta is a theoretical physicist currently teaching astrophysics to senior undergraduate and graduate students at the University of Ottawa. His research focuses on astrophysics, cosmology, general relativity, the dynamics of the universe under evolutionary physical constants beyond the standard model, CMB, JWST, BAO, Big Bang nucleosynthesis, the large-scale structure and formation of galaxies, dark matter, and dark energy. To say I am thrilled to have him on the show for the second time would be an understatement. So, without further ado, let’s jump right in! Key Takeaways:

00:00 Intro.

01:50 Judging Rajendra’s paper.

Jun 21, 2024

New dark energy data could change our understanding of the universe

Posted by in category: cosmology

Are scientists wrong about dark energy? It looks like that could be the case.

Let’s dive into some recent findings from DESI, or the Dark Energy Spectroscopic Instrument, to talk about its weird findings and how that might change our understanding of the universe.

Continue reading “New dark energy data could change our understanding of the universe” »

Jun 21, 2024

Black Hole and General relativity — gravity theory ‚Einstein field ‚sch equation|Ramanujan number

Posted by in categories: cosmology, information science, quantum physics

#blackhole Physics lecture video link, just click on the link for knowledge.


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Jun 21, 2024

George Mason University announces its first NASA Space Mission, which seeks to uncover the secrets of dark energy

Posted by in category: cosmology

George Mason is the home for the new $19.5 million NASA Landolt Space Mission. Led by the College of Science’s Peter Plavchan, with the College of Engineering and Computing, this mission will launch an artificial star in orbit to help scientists calibrate telescopes and measure brightness.

Jun 20, 2024

Astronomers discover the 1st-ever merging galaxy cores at cosmic dawn

Posted by in category: cosmology

Two superluminous quasars, or active black holes at the centers of large galaxies, were found just 900 million years after the Big Bang — the earliest detection of a pair of merging quasars ever seen.

Jun 19, 2024

Astronomers just witnessed a whole galaxy ‘turn on the lights’ in real-time

Posted by in category: cosmology

Scientists think they know what’s causing this unprecedented brightening.

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