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Archive for the ‘cosmology’ category: Page 136

Aug 24, 2022

Fly Into The Heart Of The Cartwheel Galaxy In This Awesome Video

Posted by in categories: cosmology, space travel

The stunning observation of the Cartwheel galaxy by JWST has revealed the exceptional ability that the latest space observatory has. The birthplace of new stars, the hot gas, and the activity of the supermassive black hole are all shining in this incredible photograph. But there’s more. Now you can sit back, relax, and fly towards that galaxy like a starship captain thanks to a video reconstruction that takes you from here to there.

It is located 500 million light-years away and you’ll start by passing a lot of nearby stars and the odd galaxy until the cartwheel galaxy and some near and far galaxies come into view and get closer and closer. The released image itself was incredible but seeing in the video how a little speck of darkness becomes a galaxy 145,000 light-years across is absolutely mind-blowing.

The Cartwheel is a galaxy merger. It underwent a bullseye-style collision with a smaller companion within the last one billion years, causing the spiral arms that would be expected for such a galaxy to disappear into two expanding circles. And the “spokes” are the galaxy slowly trying to reform its normal spiral shape. This is a process that will last for millions of years so we can continue to enjoy the incredible object for a long time yet.

Aug 24, 2022

Dark matter could finally reveal itself through self-interactions

Posted by in categories: cosmology, particle physics

One hypothesis for the nature of dark matter is that some of it could be self-interacting, meaning the individual particles interact slightly with one another.

Aug 23, 2022

‘The most ridiculously detailed’ photo of the moon has been captured

Posted by in category: cosmology

Unlike the plethora of high-res cosmic photography we’ve been blessed with this year, this breathtaking snap doesn’t come from the James Webb telescope but instead, it comes from two astrophotographers who met each other on Reddit.

Stargazers Andrew McCarthy and Connor Matherne first connected on Reddit and then Instagram several years ago after becoming mutual fans of each other’s work.

McCarthy is renowned in his field for his incredibly detailed photographs, taking tens of thousands of photos and stitching them together in a ‘mosaic’ fashion to create incredibly detailed and precise images of his subjects.

Aug 23, 2022

What happens when a black hole destroys a star? New study reveals a chaotic doom

Posted by in category: cosmology

If you’ve ever wondered what happens when something gets sucked into a black hole, now is your opportunity to find out.


This unique look at the disruption of a star explains why astronomers haven’t seen large amounts of high-energy X-rays from this and other similar tidal disruption events.

Aug 23, 2022

Einstein is right, again! Rotating black holes are stable

Posted by in category: cosmology

An international group of scientists finally proved that slowly rotating Kerr black holes are stable, a report from Quanta Magazine reveals. In 1963, mathematician Roy Kerr…

Aug 22, 2022

Black Holes Finally Proven Mathematically Stable

Posted by in categories: cosmology, information science

Unstable black holes would require a rewrite of Einstein’s gravitational theory.

An international group of scientists finally proved that slowly rotating Kerr black holes are stable, a report from Quanta Magazine

In 1963, mathematician Roy Kerr found a solution to Einstein’s equations that accurately described the spacetime around what is now known as a rotating black hole.

Continue reading “Black Holes Finally Proven Mathematically Stable” »

Aug 22, 2022

No, James Webb Space Telescope Images Do Not Debunk the Big Bang

Posted by in category: cosmology

The JWST provides an intriguing look at the early universe, but it’s not yet rewriting fundamental theories of the cosmos.

Aug 22, 2022

NASA have released the sound of a black hole and it’s terrifying

Posted by in category: cosmology

NASA has dropped a remix of what a black hole sounds like — and it’s exactly what you’d expect. The hole in question sits 200 million light-years away in the Perseus galaxy cluster — an 11 million-light-year-wide set of galaxies packed with hot gas. In the clip, you can hear rumbling and groaning which feels fit for an episode of Stranger Things, but it’s actually pressure waves rippling through the hot gas.

Aug 21, 2022

Starts With A Bang Podcast #84 — Cosmological Mysteries

Posted by in category: cosmology

Our model of the Universe, dominated by dark matter and dark energy, explains almost everything we see. Almost. Here’s what remains.

Aug 21, 2022

Evil doppelgängers, alternate timelines and infinite possibilities: the physics of the multiverse explained

Posted by in categories: cosmology, physics

The word ‘universe’ once described everything that exists. But as our horizons have expanded, many scientists have begun to consider what’s beyond our own cosmos, and…