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Archive for the ‘cosmology’ category: Page 137

Aug 26, 2022

Water World Found? Just 100 Light Years Away! Prospects for Life Profound

Posted by in categories: cosmology, space travel

Have we found a water planet with deep oceans nearby (in astronomical terms)? Could water worlds be plentiful near red dwarf stars? Would life have a better chance on such worlds? Listen to see what we know so far about this and planet TOI-1452 b.

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Aug 26, 2022

SLS Artemis I Rocket Overview

Posted by in categories: cosmology, space travel

A tour of the Space Launch System (SLS) Artemis-I Rocket.
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Aug 26, 2022

Is the Universe a giant Black Hole?

Posted by in category: cosmology

A black hole is matter and/or light crammed into such a tiny volume that nothing can escape. But, shortly after the big bang, the observable universe was that small. How did it escape?! Brilliant for 20% off: http://brilliant.org/ScienceAsylum.

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Aug 25, 2022

Maybe the Universe Thinks. Hear Me Out

Posted by in categories: cosmology, neuroscience, physics

Finally, there’s the issue that black holes can destroy information. Once you have crossed the event horizon, it seems you’d need to move faster than light to get back out. But a non-local connection across the horizon would also get information out. Some physicists have even suggested that dark matter, a hypothetical type of matter that supposedly makes up 85% of matter in the universe, is really a misattribution. There may be only normal matter, it’s just that its gravitational attraction is multiplied and spread out because places are non-locally connected to each other.

A non-locally connected universe, hence, would make sense for many reasons. If these speculations are correct, the universe might be full with tiny portals that connect seemingly distant places. The physicists Fotini Markopoulou and Lee Smolin estimated that our universe could contain as much as 10,360 of such non-local connections. And since the connections are non-local anyway, it doesn’t matter that they expand with the universe. The human brain, for comparison, has a measly 1015connections.

Let me be clear that there is absolutely zero evidence that non-local connections exist, or that, if they existed, they’d indeed allow the universe to think. But we cannot rule this possibility out either. Crazy as it sounds, the idea that the universe is intelligent is compatible with all we know so far.

Aug 25, 2022

NASA Scientists Help Probe Dark Energy

Posted by in categories: cosmology, physics

Could one of the biggest puzzles in astrophysics be solved by reworking Albert Einstein’s theory of gravity? A new study co-authored by NASA scientists says not yet.

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…