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Archive for the ‘cosmology’ category: Page 68

Jul 29, 2022

This IoT device notifies you before an Earth-obliterating supernova

Posted by in categories: cosmology, internet

Would you like a warning before the world ends?

Well, it’s now possible. Extraluminal is an Internet of Things (IoT) device that will notify you an hour before the Earth is about to be destroyed by a supernova.

A supernova refers to “the cataclysmic explosion of a massive star at the end of its life. It can emit more energy in a few seconds than our sun will radiate in its lifetime of billions of years.”

Jul 28, 2022

The 2022 Oppenheimer Lecture: The Quantum Origins of Gravity

Posted by in categories: cosmology, quantum physics

It was once thought that gravity and quantum mechanics were inconsistent with one another. Instead, we are discovering that they are so closely connected that one can almost say they are the same thing. Professor Susskind will explain how this view came into being over the last two decades, and illustrate how a number of gravitational phenomena have their roots in the ordinary principles of quantum mechanics.

Leonard Susskind is an American physicist, who is a professor of theoretical physics at Stanford University, and founding director of the Stanford Institute for Theoretical Physics. His research interests include string theory, quantum field theory, quantum statistical mechanics, and quantum cosmology.

Jul 28, 2022

The James Webb Space Telescope may have just found its first supernova

Posted by in category: cosmology

This could be the first step to studying the oldest explosions in the universe.

Jul 27, 2022

Dark matter behavior may conflict with our best theory of the universe

Posted by in categories: cosmology, particle physics

New research shows a direct interaction between dark matter particles and those that make up ordinary matter.

A new paper, published in the *Astronomy and Astrophysics* journal, discovered unexpected characteristics for the elusive dark matter that likely goes against our best theory of the universe — the Lambda-Cold Dark Matter model.

What is dark matter?

Jul 27, 2022

James Webb breaks its own record for the most distant galaxy ever observed

Posted by in category: cosmology

We’re only days into James Webb’s scientific operations, and the giant infrared observatory has already broken its own record for the most distant galaxy ever observed.

Last week, a team unearthed an observation of a galaxy that existed 400 million years after the Big Bang. This week, a new analysis revealed a galaxy a mere 235 million years after the Big Bang. It is located 35 billion light-years away from Earth.

James Webb peers further into the universe than ever before

Continue reading “James Webb breaks its own record for the most distant galaxy ever observed” »

Jul 27, 2022

Soon you can take a portable version of the Earth’s magnetic field to outer space

Posted by in categories: cosmology, education, physics

Jul 25, 2022

AI asked to show an image from inside a black hole

Posted by in categories: cosmology, robotics/AI

A new artificial intelligence system has been asked to produce an image from inside of a black hole, and the results are stunning.

Jul 24, 2022

Amazing James Webb image looks like a wormhole

Posted by in category: cosmology

Early data from the James Webb Space Telescope is already starting to come in, with exciting finds like views of Jupiter and a potential sighting of the most distant galaxy ever observed. But there’s a lot more Webb data being shared, and much of it is publicly available through the Space Telescope Science Institute’s MAST archive. That means enterprising astronomers are already digging through James Webb data to perform their own analyses, and have created some amazing visuals.

Gabriel Brammer, an associate professor at the University of Copenhagen, composed and shared this incredible and faintly terrifying image on Twitter. It shows the galaxy Messier 74, captured in the mid-infrared range by Webb’s MIRI instrument as part of the PHANGS-JWST project.

“Let’s just see what JWST observed yesterday …” Brammer wrote on Twitter. Then, echoing all of our sentiments, “Oh, good god.”

Jul 24, 2022

Astronomers find ‘Goldilocks’ black hole

Posted by in categories: cosmology, physics

Last year, scientists used gravitational waves to detect an elusive intermediate-mass black hole for the first time. Now, Australian astronomers have spotted another – this time using gamma-ray bursts.

Black holes are formed when massive stars reach the end of their lives and collapse under their own gravity. But they aren’t all the same – stellar mass black holes are small, just a few times the mass of our Sun, while supermassive black holes at the hearts of galaxy are enormous, with masses millions or even billions of times greater than our sun.

Intermediate mass black holes are the missing link between these two populations, thought to span between 100 and 100,000 solar masses. The black hole discovered in 2020 was 142 solar masses – while this newly discovered monster is on the other end of the scale, at approximately 55,000 solar masses.

Jul 24, 2022

Are Wormholes Massive Cosmic Tunnels Through Which Spacecraft Can Travel?

Posted by in categories: cosmology, space travel

Two scientific teams have proposed new models of wormholes, one focusing on microscopic wormholes and one focusing on traversible ones for human travel.

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