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Mare Imbrium sunrise
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some-subject · 2 days
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mysticstronomy · 2 days
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DARK MATTER DOESN'T EXIST IN OUR UNIVERSE??
Blog#387
Wednesday, March 27th, 2024.
Welcome back,
The composition of the universe, as we currently understand it, is thought to comprise 'normal matter,' 'dark energy,' and 'dark matter.' However, a recent study from the University of Ottawa sheds new light on this notion, suggesting that dark matter might not actually be a necessary component.
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Dark matter is a term used in cosmology to describe entities that don't interact with light or the electromagnetic field, and can only be inferred through gravitational effects. Essentially, it's invisible and its composition remains a mystery, yet it plays a crucial role in our comprehension of the behavior of galaxies, planets, and stars.
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Professor Rajendra Gupta, from the Faculty of Science at the University of Ottawa, conducted this groundbreaking study. He utilized a blend of the covarying coupling constants (CCC) and "tired light" (TL) theories, amalgamating them into what's termed the CCC+TL model.
This model proposes that the forces of nature diminish over cosmic time and that light loses energy during its extensive travels.
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Gupta's model has been rigorously tested against various observations, including the distribution of galaxies and the evolution of light from the early universe.
This study challenges the prevailing understanding of the universe, which posits that approximately 27% of its composition consists of dark matter, with less than 5% being ordinary matter, leaving the rest attributed to dark energy.
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Gupta said, "The findings from our study affirm our prior research on the age of the universe, which concluded it to be approximately 26.7 billion years old, and demonstrate that the universe may not necessitate the presence of dark matter."
He further explains that while standard cosmology attributes the accelerated expansion of the universe to dark energy, it is actually the weakening of natural forces as the universe expands that drives this phenomenon, not dark energy.
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The concept of "redshifts" plays a pivotal role in this study. Redshifts occur when light shifts towards the red end of the spectrum. Gupta scrutinized data from recent papers on galaxy distribution at low redshifts and the angular size of the sound horizon from literature at high redshifts.
Originally published on www.thebrighterside.news
COMING UP!!
(Saturday, March 30th, 2024)
"IS THERE GRAVITY IN SPACE??"
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8infinite-space8 · 2 days
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Nebula NGC 2014 and NGC 2020.
Credit: NASA, ESA, and STScI.
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cosmicexplorersblog · 24 hours
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A rose made of galaxies
Arp 273 is a pair of interacting galaxies, 300 million light years away in the constellation Andromeda. It was first described in the Atlas of Peculiar Galaxies, compiled by Halton Arp in 1966. The larger of the spiral galaxies, known as UGC 1810, is about five times more massive than the smaller galaxy. It has a disc that is tidally distorted into a rose-like shape by the gravitational pull of the companion galaxy below it, known as UGC 1813. The smaller galaxy shows distinct signs of active star formation at its nucleus, and "it is thought that the smaller galaxy has actually passed through the larger one."
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livingforstars · 2 days
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How Much is That Comet in the Window? - March 27th, 1996.
"The above true-colour photo taken March 25th, 1996, shows Comet Hyakutake passing below the stars of the Big Dipper. Many astronomy enthusiasts delight in helping people in their local community see comets, this one in particular. Both Jerry Bonnell and Robert Nemiroff from APOD were so inclined - both then and when Comet Halley came by in 1986. During these sessions, many good questions are asked and occasionally a humorous situation will arise. One was with a little girl. She waited so patiently for her turn to look through the telescope, hardly able to contain her excitement. Finally her turn came.
"Do you see the comet?" Robert had asked.
"Wow, wow, WOW!" She beamed.
"You see it?"
"No."
One little boy seemed particularly bent on destruction. "This telescope looks like a big gun," he volunteered.
"In some ways, it's even more powerful than a gun," Robert replied, hoping to challenge his imagination.
"Really?" he countered. "Can we shoot down the comet?"
"How expensive is the telescope?" is a fairly common question. But one time a real business-person showed up and, possibly feeling particularly affluent, asked "How much is the comet?""
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whiteshipnightjar · 2 months
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Zoozve, my beloved
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nasa · 4 months
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Black Hole Friday Deals!
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Get these deals before they are sucked into a black hole and gone forever! This “Black Hole Friday,” we have some cosmic savings that are sure to be out of this world.
Your classic black holes — the ultimate storage solution.
Galactic 5-for-1 special! Learn more about Stephan’s Quintet.
Limited-time offer game DLC! Try your hand at the Roman Space Observer Video Game, Black Hole edition, available this weekend only.
Standard candles: Exploding stars that are reliably bright. Multi-functional — can be used to measure distances in space!
Feed the black hole in your stomach. Spaghettification’s on the menu.
Act quickly before the stars in this widow system are gone!
Add some planets to your solar system! Grab our Exoplanet Bundle.
Get ready to ride this (gravitational) wave before this Black Hole Merger ends!
Be the center of attention in this stylish accretion disk skirt. Made of 100% recycled cosmic material.
Should you ever travel to a black hole? No. But if you do, here’s a free guide to make your trip as safe* as possible. *Note: black holes are never safe. 
Make sure to follow us on Tumblr for your regular dose of space!
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vangoghcore · 5 months
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by nasa
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So apparently on December 11th NASA tested using lasers to send information from space to Earth and this was the video they used:
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The first video to be sent from space to Earth via laser is of an orange tabby cat chasing a laser pointer. His name? Taters.
More information:
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A unique view of Mars and its scarred surface!
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deltawebsistem · 6 months
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NASA has released new images of Jupiter's moon Europa captured by the Juno spacecraft.
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mintiestcrystal · 8 months
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i find it so unfair that i cant do all the science. like what do you MEAN I can't study bio and chem and biochem and atrophysics and physics and geology and climate science. what do you MEAN i have a limited lifespan and need to get out of school at some point to get a job. i want to collect the science fields like pokemon, this isn't fair
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maybeinanotherworld · 7 months
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physics professors are really going through it- every day, I think about my quantum physics professor who once went on a rant about how there's too many types of mustard these days followed by the words "well, at least quantum physics is less complicated than the mustard aisle" followed by one of the most cursed derivations I have ever seen
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8infinite-space8 · 16 hours
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NGC 4038 and NGC 4039.
Credit: ESA/Hubble & NASA.
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