We have no way of knowing, from first principles, which one of these would wind up describing our universe, the same way you cannot know whether the square root of 4 is +2 or -2. If you uniformly fill your universe with matter and energy, it must either expand or contract the distance between any two well-separated points will change over time. This clearly hasn’t happened to our universe and there’s an excellent reason why. Instead, it will collapse, and in short order, your entire universe will come to an end, forming an inevitable black hole. If you start a universe in a static state and simply allow it to gravitate over time, it will not remain static. Under the laws of Einstein’s general relativity, which is our theory of gravity, a universe filled with matter and energy cannot be static and stable. That statement is true, but there is something much more profound happening. This is more than just the intuitive, “Okay, masses move around, and masses determine how space is curved, so therefore the spatial curvature changes.” (Credit: Christopher Vitale of Networkologies and the Pratt Institute.)īut even more importantly than being curved, the fabric of space is not static. In addition, the distances between unbound objects evolve over time because the universe is expanding. However, all forms of energy, including but not limited to mass, contribute to spacetime curvature. In general relativity, we treat space and time as continuous. Instead of an empty, blank, three-dimensional grid, putting a mass down causes what would have been “straight” lines to instead become curved by a specific amount. That object is currently a specific distance away from us if we could somehow “freeze” time and measure the distance between ourselves and that object, we’d get a certain value.We are seeing the object not as it is today, but as it was a finite amount of time ago: when it emitted the light that’s now striking our eyes.If you somehow manage to pick a line of sight that doesn’t run into any of those, you’ll still encounter something: the cosmic microwave background, which is thought to be the leftover radiation from the early stages of the hot Big Bang.Īnd yet, no matter what we observe in any direction, two properties will correspond to whatever object we see: Beyond our own backyard are stars, gas, and dust strewn throughout the Milky Way, and at even greater cosmic distances are galaxies, quasars, and the matter in the intergalactic medium. The Earth is embedded in the solar system, with planets, moons, rocky and icy bodies, dust, and plasma particles permeating our environment. Go HERE for details of the itunes release of 'Woodstock: Music From The Original Soundtrack' which has been issued to celebrate the 45th Anniversary Of Woodstock.No matter where you look in the universe, in any direction, your line of sight will eventually run into some type of matter or radiation. Please see the Music page for details of how to order. The 50th Anniversary CD and t-shirt are both now available from this website. It contains tracks such as:” Land Of The Vandals”, “Silverspoon Lady” & “Last Night Of The Bottle” taken from their phenomenally successful 2017 studio album A Sting In The Tale. Recorded at HsD, Erfurt, Germany on 24th March 2018, Naturally Live contains live recordings by the British blues-rock band Ten Years After. Winterbach Salierhalle Classic Rock Night DARLINGTON Darlington's Rhythm n Blues Festival – UK (The Ric Lee Band) - The Great British Rhythm & Blues Festival, Colne, Lancs Switzerland - Blues Lake Moubra - Crans Montana B-Out Turnhout, Turnhout Rock & Blues Festival UK-Skegness THE GREAT BRITISH ROCK & BLUES FESTIVAL Nene Valley Rock Festival, Nene Park, Peterborough UK - Tickets Vinyl mastered and cut at half-speed by Miles Showell at Abbey Road Studios.Īvailable as 2LP on 180gm black vinyl, 2CD, Stereo & Atmos mix as digital and a limited edition audio Blu-ray through including Atmos mix and more. The 50th anniversary edition features the original 1971 album along with a brand new 2023 stereo mix by Chris Kimsey from the original master tapes.
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