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FORGOTTEN HISTORY: 2 - Caught on Camera

Astronomers can’t agree on how fast the universe is expanding. New approaches are aiming to break the impasse

It is almost 100 years since scientists discovered the universe is expanding. In the decades that followed, the accuracy of the measurements, and interpretations and implications of this discovery, were a source of fierce debate. We now know the universe emerged dramatically from a highly compressed state in an event…

The Conversation

Hubble Telescope spots a stunning spiral galaxy shining in the 'Little Lion' (image)

A new Hubble Telescope image shines a spotlight on a classic spiral galaxy named NGC 3430.

Space

Weird physics at the edges of black holes may help resolve lingering 'Hubble trouble'

The expansion of the universe may not be accelerating at the edges of black holes. If this is the case at all event horizons, this may explain "Hubble tension," and the worst prediction in physics.

Space

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100 Years Ago, One Astronomer Massively Expanded Our Understanding Of the Universe

Astronomers, maybe more than anyone, appreciate what an island of perfection our Earth is. In 1924, this appreciation took on a whole new level of undersatnding.

Inverse

Scientists Share About The Possibility Of Existence Of Other Universes, People Are Intrigued

Vera C. Rubin Observatory, with the largest camera ever built, might finally find evidence of the multiverse, which seemed like some kind of science fiction for decades. The post Scientists Share About The Possibility Of Existence Of Other Universes, People Are Intrigued first appeared on Bored Panda.

Bored Panda

The Hubble telescope has shifted into one-gyro mode after months of technical issues − an aerospace engineering expert explains

Imagine keeping a laser beam trained on a dime that’s 200 miles away. Now imagine doing that continuously for 24 hours, while riding a merry-go-round. Seem difficult? Well, that’s basically what the Hubble Space Telescope does.

The Conversation

Where is the center of the universe?

The universe is undeniably vast, and from our perspective, it may seem like Earth is in the middle of everything. But is there a center of the cosmos, and if so, where is it? If the Big Bang started the universe, then where did it all come from, and where…

Space

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Scientists can’t agree on how fast the universe is expanding – why this matters so much for our understanding of the cosmos

It’s one of the biggest puzzles in cosmology. Why two different methods used to calculate the rate at which the universe is expanding don’t produce the same result. Known as the Hubble tension, the enigma suggests that there could be something wrong with the standard model of cosmology used to…

The Conversation

100 years ago, our understanding of the universe exploded

Astronomers, maybe more than anyone, appreciate what an island of perfection our Earth is. Our orbit may put us at a perfect distance from the sun for life to flourish, but it is too small to easily help astronomers determine how big the universe is.

The Conversation

A new theory of quantum gravity could explain the biggest puzzle in cosmology, study suggests

A new theory of quantum gravity, which attempts to unite quantum physics with Einstein's relativity, could help solve the puzzle of the universe's expansion, a theoretical paper suggests.

LiveScience

Does a cosmic 'glitch' in gravity challenge Albert Einstein's greatest theory?

Scientists think they've uncovered a cosmic "glitch" in gravity that could require a revision in Einstein's theory of general relativity.

Space

Researchers Are Proposing A New Solution For The Hubble Tension Puzzle

Using one of the most powerful tools in astronomy - the James Webb Space Telescope (JWST) - Wendy Freedman is about to solve the greatest mystery of the universe. The post Researchers Are Proposing A New Solution For The Hubble Tension Puzzle first appeared on Bored Panda.

Bored Panda

'Singing' red giant stars could offer another way to measure the universe's expansion

The different ways red giants "sing" could affect distance measurements of the universe, potentially helping soothe a cosmic headache: The Hubble tension.

Space

Arno Penzias, co-discoverer of the Big Bang's afterglow, dies at age 90

Penzias, with his colleague Robert Woodrow Wilson, discovered the cosmic microwave background while working at Bell Labs in the 1960s. The finding was the smoking gun evidence for the Big Bang.

WEKU

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LiveScience

Science news this week: An ancient 'blue dragon' and atom-size black holes

Dec. 24, 2023: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.

LiveScience

After 2 years in space, the James Webb telescope has broken cosmology. Can it be fixed?

For decades, measurements of the universe's expansion have suggested a disparity known as the Hubble tension, which threatens to break cosmology as we know it. Now, on the eve of its second anniversary, a new finding by the James Webb Space Telescope has only entrenched the mystery.

LiveScience

'It could be profound': How astronomer Wendy Freedman is trying to fix the universe

University of Chicago astronomer Wendy Freedman tells us how she's searching for an answer to the Hubble tension — a discrepancy between measurements of our universe's expansion that could threaten the dominant model of how the universe has grown since the Big Bang.

Space

Hubble Space Telescope zooms in on member of galactic quartet (image)

The Hubble Space Telescope photographed NGC 2814, an irregular galaxy that belongs to a group of four "late-type galaxies" collectively called Holmberg 124.

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Space

Could a 'supervoid' solve an unrelenting debate over the universe's expansion rate?

Measurements of how fast the universe is expanding differ depending on how you measure the rate. Could a huge under-density of galaxies, including the Milky Way, be to blame?

Space

James Webb Space Telescope captures vibrant details of the Milky Way's galactic neighbor (photo)

A stunning new image from the James Webb Space Telescope shows the Milky Way's neighbor, NGC 6822, glowing green and gold while punctuated by bright red and blue stars, revealing its lack of metal.

The Hindu

Indian group proposes radical new way to settle universe expansion dispute

Scientists from ICTS Bangalore have proposed a new way to measure the Hubble constant, which could help resolve a crisis in cosmology about how fast the universe is accelerating, using lensed gravitational waves observed by the next generation of LIGO observatories.

LiveScience

5 fascinating facts about the Big Bang, the theory that defines the history of the universe

From the Catholic priest who pioneered it, to how we can (almost) see it, here are 5 fascinating facts about the Big Bang.

The Canberra Times

How we measure the speed at which the universe expands

A new discovery can hopefully shed light on this debate.

The Conversation

How fast is the Universe really expanding? Multiple views of an exploding star raise new questions

How did we get here? Where are we going? And how long will it take? These questions are as old as humanity itself, and, if they’ve already been asked by other species elsewhere in the Universe, potentially very much older than that.

Space

'Hubble trouble' could deepen with new measurement of the universe's expansion

Cosmologists have a problem: Their measurements of the rate of expansion of the universe don't agree. And a new, highly accurate measurement of variable stars could deepen this 'Hubble trouble.'

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