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Archive for the ‘cosmology’ category: Page 41
Apr 25, 2024
What Was There Before the Big Bang? 3 Good Hypotheses!
Posted by Dan Breeden in categories: cosmology, mathematics, security
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Apr 25, 2024
Are we surrounded by dark energy? A spacecraft tetrad will look for it
Posted by Dan Breeden in categories: cosmology, open access, physics, space travel
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Most astrophysicists believe that 95% of the universe is dark stuff — dark matter and dark energy. We can’t see, feel, or hear it, but it’s supposedly all around us. NASA scientists recently proposed a new experiment to test what is going on with the dark stuff in our vicinity. The want to use four small spacecraft flying around the solar system in a tetrahedron formation to look for variations from Einstein’s theory of gravity. Let’s have a look.
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An exploration of the mystery of the Hubble Tension in Cosmology. My Patreon Page: https://www.patreon.com/johnmichaelgodierMy Event Horizon Channel:
Apr 23, 2024
The Universe’s Accelerated Expansion Might be Slowing Down
Posted by Natalie Chan in categories: cosmology, evolution
The universe is still expanding at an accelerating rate, but it may have slowed down recently compared to a few billion years ago, early results from the most precise measurement of its evolution yet suggested Thursday.
While the preliminary findings are far from confirmed, if they hold up it would further deepen the mystery of dark energy—and likely mean there is something important missing in our understanding of the cosmos.
These signals of our universe’s changing speeds were spotted by the Dark Energy Spectroscopic Instrument (DESI), which is perched atop a telescope at the Kitt Peak National Observatory in the US state of Arizona.
Apr 23, 2024
Peering Into the Abyss: AI and Physics Unite to Unveil a Black Hole Flare in 3D
Posted by Saúl Morales Rodriguéz in categories: cosmology, physics, robotics/AI
Using AI and ALMA data, scientists create a groundbreaking 3D video of flares around our galaxy’s central black hole, offering new insights into its dynamic environment.
Scientists believe the environment immediately surrounding a black hole is tumultuous, featuring hot magnetized gas that spirals in a disk at tremendous speeds and temperatures. Astronomical observations show that within such a disk, mysterious flares occur up to several times a day, temporarily brightening and then fading away. Now a team led by Caltech scientists has used telescope data and an artificial intelligence (AI) computer-vision technique to recover the first three-dimensional video showing what such flares could look like around Sagittarius A* (Sgr A*, pronounced sadge-ay-star), the supermassive black hole at the heart of our own Milky Way galaxy.
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Apr 22, 2024
Physicist Claudia de Rham: ‘Gravity connects everything, from a person to a planet’
Posted by Dan Breeden in category: cosmology
I found this on NewsBreak: Physicist Claudia de Rham: ‘Gravity connects everything, from a person to a planet’
The scientist on training as a diver, pilot and astronaut in order to understand the true nature of gravity, and why being able to describe what happens at the centre of a black hole is so important.
Apr 22, 2024
New models of Big Bang show that visible universe and invisible dark matter co-evolved
Posted by Dan Breeden in categories: cosmology, physics
I found this on NewsBreak: New models of Big Bang show that visible universe and invisible dark matter co-evolved.
Physicists have long theorized that our universe may not be limited to what we can see. By observing gravitational forces on other galaxies, they’ve hypothesized the existence of “dark matter,” which would be invisible to conventional forms of observation.
Apr 22, 2024
If photons have mass, could they explain dark matter?
Posted by Paul Battista in category: cosmology
Our Universe requires dark matter in order to make sense of things, astrophysically. Could massive photons do the trick?