Showing posts with label The Big Think. Show all posts
Showing posts with label The Big Think. Show all posts

Tuesday, September 17

Galaxy with Impossible Light Signature


This region of space, viewed first iconically by Hubble and later by JWST, shows an animation that switches between the two. Both images still have fundamental limitations, as they were acquired from within our inner Solar System, where the presence of zodiacal light influences the noise floor of our instruments and cannot easily be removed. The extra presence of point-like red objects in JWST images, also known as “little red dots,” has finally been explained, but other puzzles still remain.






Since its launch in December of 2021, the James Webb Space Telescope (JWST) has spotted record-setting objects all across the Universe, including at the greatest distances ever seen.

Many distant galaxies are energetic and show signatures of emission lines from specific atoms and molecules, particularly hydrogen. However, the Lyman-α line has never been seen earlier than 550 million years after the Big Bang.

Until now. With the discovery and spectroscopic follow-up on galaxy JADES-GS-z13-1-LA, we now have strong evidence for that emission line from a galaxy just 326 million years after the Big Bang. The question is: how?              READ MORE...



Friday, August 25

The Nuclear Fusion Era Has Arrived


In December of 2022, the National Ignition Facility reached an unprecedented milestone in nuclear fusion research: passing the vaunted "breakeven" point.

Now, for the second time and with even better efficiency, more energy was liberated from a fusion reaction than was used to create the fusion reaction: a repeat, verification, and improvement of the original breakthrough.

The old saying of "fusion is 50 years away, and always will be" is no longer the case. But will we invest enough resources in the right places to bring it to fruition?

Last year, on December 5, 2022, an incredible milestone was achieved: for the first time, a nuclear fusion reaction experienced what’s known as a net energy gain. 

This means, remarkably, that the energy liberated from a nuclear fusion reaction exceeded the (useful) energy that was inputted into the reaction. 

This wasn’t achieved by a magnetic confinement fusion reactor, which is where most of the worldwide fusion funding is centered, nor by any among the hundreds of private laboratories dedicated to bringing commercial fusion to the public, but rather by a largely forgotten source: the National Ignition Facility at Lawrence Livermore National Laboratory.

This year, on July 30, 2023, the National Ignition Facility did it again, and in an even superior fashion: repeating their results and achieving an even higher energy yield than in the December prior.

 All of this was achieved despite a paltry amount of funding being directed toward nuclear fusion research by the U.S. government: an average of just half-a-billion dollars per year across all endeavors, combined. 

With this recent confirmation, the path toward developing widespread nuclear fusion as the anchor to a clean, carbon-neutral energy economy is now clearer than ever. 

But in order to truly achieve it, we not only need to be brave and bold, but also focused, as the distractions and pitfalls could truly divert us from the ultimate goal.  READ MORE...

Tuesday, June 13

There is no SELF


Western philosophy typically conceptualizes the self as a stable, controlling entity, comparable to a pilot, while Eastern philosophies such as Buddhism argue that the self is an illusion, a byproduct of our thought processes. 

Modern neuroscience provides evidence that aligns with the Eastern view, revealing that the left hemisphere of the brain constantly creates narratives to interpret reality, leading to a mistaken identification with these self-narratives.

This false sense of self, which is often equated with the incessant internal dialogue, contributes significantly to human mental suffering.

The brain-powered individual, which is variously called the self, the ego, the mind, or “me,” lies at the center of Western thought. In the worldview of the West, we herald the greatest thinkers as world-changers. 

There is no more concise example of this than philosopher René Descartes’ famous statement, “Cogito, ergo sum,” or, “I think, therefore I am.” But who is this? Let’s take a closer look at the thinker, or the “me,” we all take for granted.

Western view: The self is a pilot

This “I” is for most of us the first thing that pops into our minds when we think about who we are. The “I” represents the idea of our individual self, the one that sits between the ears and behind the eyes and is “piloting” the body. 

The “pilot” is in charge, it doesn’t change very much, and it feels to us like the thing that brings our thoughts and feelings to life. It observes, makes decisions, and carries out actions — just like the pilot of an airplane.

This I/ego is what we think of as our true selves, and this individual self is the experiencer and the controller of things like thoughts, feelings, and actions. The pilot self feels like it is running the show. It is stable and continuous. 

It is also in control of our physical body; for example, this self understands that it is “my body.” But unlike our physical body, it does not perceive itself as changing, ending (except, perhaps for atheists, in bodily death), or being influenced by anything other than itself.   READ MORE...