23
POPSTime to test time “If it's true, it's Nobel-prize-winning stuff” Karsten Danzmann Max Planck Institute for Gravitational Physics
18
POPSTime to test time Yet if Hogan's ideas are right, noise associated with this fundamental fuzziness should be prominent at GEO600, a joint British and German machine operating near Hannover, Germany, that is searching for gravitational waves. These waves are thought to arise during events such as the massive cosmic collisions of black holes and neutron stars. Confirmation of the idea — which could come as experimental upgrades to GEO600 are put in place over the coming year — would be a big step towards a verifiable quantum theory of gravity, a long-sought unification of quantum mechanics (the physics of the very small) with general relativity (the physics of the very big). Hogan outlines his predictions in a paper published on 30 October in Physical Review D1.
5
POPSNearby Solar System Looks Like Our Own at Time Life Formed Right now, Epsilon Eridani is surrounded by three asteroid rings that scientists believe are held in formation by large planets, the first of which is theorized to sit about half the distance from Mars to Jupiter. In the new paper, two other large planets, slightly farther from their star than Uranus and Neptune are from the sun, are proposed to explain the shape of the outer belts. It will take more sensitive instruments — perhaps like the next-generation of planet-hunting telescopes — to determine whether any would-be Earths lurk inside the habitable zone near the star.
29
POPS50 Billion Suns! -The Biggest Single Object in the Universe Based on this self-regulating maximum rate, scientists at the Harvard-Smithsonian Center for Astrophysics, Massachusetts, and the European Southern Observatory, Chile, have calculated an upper limit for these mega-mammoth masses. Fifty billion suns, that's 100 000 000 000 000 000 000 000 000 000 000 000 000 000 kg, otherwise known as "ridiculously stupidly big" and triple the size of the largest observed black hole, OJ 287.
4
POPSTelescope spots monster galactic cluster They theorize that the fact that it's 7.7 billion light years away (as far as they know) meant that it was before the acceleration due to dark energy made it impossible for galactic clusters that large to hold together. It reminded me of a poem by Hughes Mearns. 'Antigonish' As I was going up the stair, I saw a star that wasn’t there. It wasn’t there again today, I wish, that star would stay away. (I thought I'd adjust it to cover Light years, and dark matter.)
12
POPSShow must go on... "I have thoroughly enjoyed my years playing guitar and recording music with Queen, but it's extremely gratifying to see the publication of my thesis," May said. "I've been fascinated with astronomy for years, and I was happy to finally complete my Ph.D. last year and record my studies of the Zodiacal Light in this book."
14
POPSQuiet Explosion: Object Intermediate Between Normal Supernovae And Gamma-ray Bursts Found Stars that were at birth more massive than about 8 times the mass of our Sun end their relatively short life in a cosmic, cataclysmic firework lighting up the Universe. The outcome is the formation of the densest objects that exist, neutron stars and black holes. When exploding, some of the most massive stars emit a short cry of agony, in the form of a burst of very energetic light, X- or gamma-rays.
11
POPSA Quark Star? Super-luminous Stellar Explosion Observed Quarks are the fundamental components of protons and neutrons, which make up the nucleus of atoms. The most dense objects known to exist today are neutron stars--stars composed entirely of tightly packed neutrons. A typical neutron star is some 16 miles across, yet has a mass one and a half times the mass of our Sun. The question is, is a neutron star indeed the most dense object that exists? It is thought that if the neutrons are too tightly packed--if what scientists consider a neutron star is too dense--the resulting instability may lead to a further collapse, resulting in a second explosion and the creation of a quark star. The energy that powers that second explosion comes from neutrons breaking down into their component parts: quarks.
23
POPSNASA Plans to Visit the Sun The two mysteries prompting this mission are the high temperature of the sun's corona and the puzzling acceleration of the solar wind: Mystery #1—the corona: If you stuck a thermometer in the surface of the sun, it would read about 6000o C. Intuition says the temperature should drop as you back away; instead, it rises. The sun's outer atmosphere, the corona, registers more than a million degrees Celsius, hundreds of times hotter than the star below. This high temperature remains a mystery more than 60 years after it was first measured. Mystery #2—the solar wind: The sun spews a hot, million mph wind of charged particles throughout the solar system. Planets, comets, asteroids—they all feel it. Curiously, there is no organized wind close to the sun's surface, yet out among the planets there blows a veritable gale. Somewhere in between, some unknown agent gives the solar wind its great velocity. The question is, what?
0
POPSThe Occult Nature of Light "Both God and Light exist outside of space & time." "There is something very suggestive about no-space, no-time, Light, and God. I don't know what it is but there's something deep and profound here that I wish I understood." "Light propagation may actually create space & time. The zero point field inertial hypothesis implies that the most fundamental property of matter, namely mass, is created by light." - Dr. Bernard Haisch, astrophysicist, author of "The God Theory"
9
POPSNew Space Telescope to Explore the Unknown Perhaps most exciting is the possibility that GLAST will find something no one is expecting. This space telescope can peer a range of high-energy gamma rays that is virtually unexplored. "There's such a leap forward in capabilities with GLAST that we have a really good chance of discovering things not even on the list yet," Ritz said. The mission is scheduled for liftoff atop a Delta 2 rocket at 11:45 a.m. EDT on June 7.
22
POPSA Test of the Copernican Principle Disproving the Copernican Principle would amount to a a Copernican revolution on its own account :-) Also, certain aspects of general relativity would need a profound review. Fortunately it seems Copernicus was right after all. Or was he?
1
Pops
Newest Clips
Latest Comments
Most Pops
Print
Save
Turn on live update