Fraser Cain speaks to Sarah Pearson (Space with Sarah) about dark matter and whether there could be small dark matter galaxies that we haven’t yet detected. A fascinating insight into the ongoing studies of the mysterious stuff that accounts for most of all matter in the universe.
Let Joe explain:
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Ok, so please accept my apologies, this blog has turned into an essay and it has been a long time coming. I’ve wanted to write about the ideas behind the science concepts and suggestions which feature in my book Anomaly (The Soul Prophecies) now for a while, but you know, life gets in the way, […]
Since it left Earth on April 24, 1990, the Hubble telescope has delivered again and again stunning snapshots of the vast universe around us, and kept us in awe of the marvels of space. To mark the 27th anniversary of the telescope’s launch, NASA has released this epic image of two galaxies captured in one…
Original article via The Independent
Large Hadron Collider finds five new subatomic particles, shedding light on what makes the universe work
The particles were ‘hiding in plain sight’, the team said
Scientists have stumbled on five new subatomic particles, helping to illuminate some of the most fundamental parts of the universe. The particles had been “hiding in plain sight”, according to one of the researchers that found them.
Researchers working on the Large Hadron Collider, Europe’s giant atom-smasher, ran into the special particles while working on the LHCb experiment, also known as “the beauty experiment”, which is exploring what happened just after the Big Bang that gave birth to the universe.
Sorry it’s been quiet here for a while. Exam season slows us down a little.
Original article via Science Alert
It’s official: time crystals are a new state of matter, and now we can create them – ScienceAlert:
Earlier this year, physicists had put together a blueprint for how to make and measure time crystals – a bizarre state of matter with an atomic structure that repeats not just in space, but in time, allowing them to maintain constant oscillation without energy.
Two separate research teams managed to create what looked an awful lot like time crystals back in January, and now both experiments have successfully passed peer-review for the first time, putting the ‘impossible’ phenomenon squarely in the realm of reality. More…
Image: Pete LinForth/Pixabay
Video Credit: NASA
Original article in Physics & Astronomy
There are many scientific and non-scientific varieties of the answer about what came before Big Bang. Some say there was literally nothing and some say a black hole or a multiverse. But now a group of mathematicians from Canada and Egypt have analyzed some cutting edge scientific theory and a complex set of equations to find what preceded the universe in which we live. Their research paper has been published in Nature.
Original article on Phys.org
Normal crystals, likes diamond, are an atomic lattice that repeats in space, but physicists recently suggested making materials that repeat in time. Last year, UC Berkeley’s Norman Yao sketched out the phases surrounding a time crystal and what to measure in order to confirm that this new material is actually a stable phase of matter. This stimulated two teams to build a time crystal, the first examples of a non-equilibrium form of matter.
To most people, crystals mean diamond bling, semiprecious gems or perhaps the jagged amethyst or quartz crystals beloved by collectors.
To Norman Yao, these inert crystals are the tip of the iceberg.
If crystals have an atomic structure that repeats in space, like the carbon lattice of a diamond, why can’t crystals also have a structure that repeats in time? That is, a time crystal?
In a paper published online last week in the journal Physical Review Letters, the University of California, Berkeley assistant professor of physics describes exactly how to make and measure the properties of such a crystal, and even predicts what the various phases surrounding the time crystal should be—akin to the liquid and gas phases of ice.
Read more at: https://phys.org/news/2017-01-physicists-unveil-mattertime-crystals.html#jCp
Via Physics Today
Theories that incorporate hidden variables are consistent with quantum mechanics only if the systems they describe can store unlimited information.
John Stewart Bell’s famous theorem is a statement about the nature of any theory whose predictions are compatible with those of quantum mechanics: If the theory is governed by hidden variables, unknown parameters that determine the results of measurements, it must also admit action at a distance. Now an international collaboration led by Adán Cabello has invoked a fundamental thermodynamics result, the Landauer erasure principle, to show that systems in hidden-variable theories must have an infinite memory to be compatible with quantum mechanics.