Today’s Popular Posts
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Popular Posts
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Tag Archives: cosmology
Supersymmetry: SUSY still has no data
Even physicists get that sinking feeling in the pit of their stomach that something you’ve relied on for most of your life may be wrong, or at least not as right as you thought. If you’re a good scientist, you question and examine – your own thinking and whatever it is that has shaken you [...]
Posted in Impact: Nuclear Physics Also tagged Lepton-Photon Conference, LHC, particle physics, Standard Model, superparticle, superpartners, supersymmetry, SUSY, Tevatron Leave a comment
No WIMPS in the Xenon
It is a strange headline – No WIMPS in the Xenon, but then Dark Matter is strange. It supposedly must exist, in fact, it makes up 25% of the material in the universe. However, it has never been seen. Not seen even by the latest super high sensitivity detector project called XENON100. Located at the [...]
Posted in News: Nuclear Physics Also tagged dark energy, dark matter, Gran Sasso, Large Hadron Collider, LHC, nuclear physics, supersymmetry, SUSY, WIMP, xenon, XENON100, XENON1T Leave a comment
NEWS: Short List
Cosmology – Hubble does it again: Another oldest galaxy | Is there no end to the universe? Trick question, of course, but the succession of ever older galaxies discovered by the Hubble Space Telescope is provocative. In the newest instance, the galaxy discovered is 13.2 billion light years away, which is the same as saying [...]
Posted in News: Also tagged clean transport, nanomedicine, neuroscience, sythetic biology Leave a comment
Light through a galactic lens: Good news, bad news of dark energy
The good news is that thanks to research by an international group of scientists and published in the August 20, 2010 issue of Science [Cosmological Constraints from Strong Gravitational Lensing in Clusters of Galaxies] we have a much more precise idea of the amount of dark energy in the universe and a fix on the [...]
Posted in Impact: Cosmology Also tagged Abel 1689, dark energy, entropic universe, galactic cluster, galactic lens, heat-death, Kepler Space Telescope, thermodynamics Leave a comment
New telescope technologies, new visions
Looking at the sky with telescopes sitting on the Earth is like looking through a somewhat primitive and dirty window. That hasn’t stopped astronomers from wanting and sometimes getting bigger and better optical telescopes. Even a somewhat distorted window on the universe is far better than human eyesight. Then along came rockets and eventually it [...]
Posted in Impact: Scientific Instruments Also tagged adaptive optics, Hubble, liquid mirror, scientific instruments, Strehl Ratio, telescope, wavefront Leave a comment
White dwarf broke the limit, scrambles astrophysicists
Cosmology tackles big questions, such as: How was the universe created? Is there such a thing as dark matter? Since ultimate answers for questions like these are not forthcoming, it’s not surprising that from time to time new information appears that sends a moiety of cosmologists and astrophysicists back to the white board for a [...]
Posted in News: Cosmology Also tagged astrophysics, Chandrasekhar limit, SN 2007if, Sun, supernova, white dwarf 1 Comment
A black hole of good news – bad news
Tucson, Arizona – Astronomers at the University of Arizona have dubbed a new observation – the “chaos cloud.” Discovered by the Kepler Space Telescope on March 1, the swirling, 10 million kilometer wide cosmic cloud has been likened to nothing ever seen before. Although measurements are preliminary, astronomers said the cloud would sweep through Earth [...]
A different kind of lens for time
In the sense that a lens refracts (bends) light, you could say that using galaxies as a lens is reasonable – if the scale of measurement is nothing less than the age of the universe. It never hurts to have confirmation (in science and a lot of other things). While we know from various studies [...]
Posted in News: Cosmology Also tagged galaxies, gravitational lensing, Hubble constant, Hubble Space Telescope, Keck Telescope, universe age Leave a comment
Dark matter missing after supernova blasts
Why aren’t there enough stars and dark matter in the galaxies we observe (particularly the many dwarf galaxies)? Good question. It’s been bothering cosmologists for decades. It bothers physicists too; they can’t see or measure dark matter, since whatever it is, it doesn’t affect the usual electromagnetic suspects. Yet dark matter is thought to account [...]
Posted in News: Cosmology Also tagged Big Bang, dark matter, dwarf galaxies, gravity, supernova Leave a comment
Hubble on the bubble
What do you call it when the best of what you’ve got now really makes you want the better thing that’s coming? Technological progress. This seem to be the case with the Hubble Space Telescope, which after its latest retrofitting is beginning to produce new and better results. Just now the various Hubble teams are [...]
Posted in News: Scientific Instruments Also tagged Big Bang, galaxies, Hubble, James Webb, scientific instruments, space telescope Leave a comment
New (and important) evidence for dark matter/energy
What better place to contemplate the mysteries of the cosmos, mysteries such as dark matter, than at the South Pole in the dead dark of winter at temperatures seldom above -40C. Members of the QUaD (QUEST at DASI) research team patiently collected data, and then spent months (running into years) of collation and interpretation. Their [...]
Posted in News: Dark Matters Also tagged background radiation, Big Bang, CMB, dark energy, dark matter, standard cosmological model Leave a comment
Planck’s Universe