Now you don’t have to fall into a black hole!
As far as we know, there are four fundamental forces that hold our Universe together – gravity, electromagnetism, and the strong and weak nuclear forces.
But, in April last year, physicists in Hungary saw evidence of a possible fifth force of nature, one that could potentially explain some of the lingering mysteries in our Universe, such as dark matter.
From the Planck scale to the cosmic scale, the size comparison of the universe will show you just how large our universe is! This is an update to my previous size comparison video published on the same date in 2015.
First song: Nexus3music: Neksus – Lights Out (https://www.youtube.com/watch?v=Sf2Zs…)
Second song: Nexus3music: Neksus – 1969 (https://www.youtube.com/watch?v=k4yDa…)
Third song: Ross Bugden: ♩♫ Epic and Dramatic Music ♪♬ – Flight Hymn (Copyright and Royalty Free) (https://www.youtube.com/watch?v=XCr0b…)
Image, song and video credits: https://drive.google.com/file/d/0B1Ms…
There are many improvements over the 2015 version, which include animated lens flares, one complete zoom from helium to the observable universe with no pictures cut out, descriptions for every picture, better star models, more accurate scaling, removed omniverse due to lack of scientific sources and much more!
THE “POTSDAM GRAVITY POTATO” SHOWS VARIATIONS IN EARTH’S GRAVITY
People tend to think of gravity here on Earth as a uniform and consistent thing. Stand anywhere on the globe, at any time of year, and you’ll feel the same downward pull of a single G. But in fact, Earth’s gravitational field is subject to variations that occur over time. This is due to a combination of factors, such as the uneven distributions of mass in the oceans, continents, and deep interior, as well as climate-related variables like the water balance of continents, and the melting or growing of glaciers.
CARLO ROVELLI remembers the first time he glimpsed the beauty of Einstein’s theory of general relativity. He was an undergraduate lounging on a beach in southern Italy, leafing through a rodent-nibbled textbook. “Every so often I would raise my eyes from the book and look at the glittering sea: it seemed to me that I was actually seeing the curvature of space and time.”
Physicists at Oak Ridge National Laboratory in Tennessee and the University of Cambridge have together discovered a new state of matter. The groundbreaking findings, reported in the journal Nature, detail the observations of the long-theorized but ever-elusive state known as “quantum spin liquid” – in which electrons seemingly break into smaller pieces.
“This is a new quantum state of matter, which has been predicted but hasn’t been seen before,” said Johannes Knolle, a scientist at Cambridge’s Cavendish Laboratory and one of the paper’s coauthors, in a news release.
LIGO Detected Gravitational Waves from Black Holes
On September 14, 2015 at 5:51 a.m. Eastern Daylight Time (09:51 UTC), the twin Laser Interferometer Gravitational-wave Observatory (LIGO) detectors, located in Livingston, Louisiana, and Hanford, Washington, USA both measured ripples in the fabric of spacetime – gravitational waves – arriving at the Earth from a cataclysmic event in the distant universe. The new Advanced LIGO detectors had just been brought into operation for their first observing run when the very clear and strong signal was captured.
On Thursday (Feb. 11) at 10:30 a.m. ET, the National Science Foundation will gather scientists from Caltech, MIT and the LIGO Scientific Collaboration in Washington D.C. to update the scientific community on the efforts being made by the Laser Interferometer Gravitational-wave Observatory (LIGO) to detect gravitational waves.
In the wake of some very specific rumors focused on the possible discovery of these elusive ripples in spacetime, hopes are high that the international LIGO collaboration of scientists will finally put an end to the fevered speculation and announce the discovery of gravitational waves.
Caltech’s Konstantin Batygin, an assistant professor of planetary science, and Mike Brown, the Richard and Barbara Rosenberg Professor of Planetary Astronomy, discuss new research that provides evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system.
If life is effectively an endless series of photocopies, as DNA is transcribed and passed on from one being to the next, then evolution is the high-stakes game of waiting for the copier to get it wrong.
Too wrong, and you’ll live burdened by a maladaptive mutation or genetic disorder. Worse, you might never live at all.
But if the flaw is wrong in exactly the right way, the incredible can happen: disease resistance, sharper eyesight, swifter feet, big brains, better beaks for Darwin’s finches.