Group items matching
in title, tags, annotations or urlTau Zero Foundation - 0 views
-
The Tau Zero Foundation is a volunteer group of scientists, engineers, entrepreneurs, and writers who have agreed to work together toward practical interstellar flight and to use this quest to teach you about science, technology, and our place in the universe. By posting the latest developments and unfinished advancements here, we give students the starting materials to begin their own discoveries. By showing both how daunting and incredible this challenge is, we hope to increase attention on protecting the habitability of Earth while planning journeys into the galaxy. By reaching for the stars we will create benefits every step of the way.
Space Telescope Science Institute - 0 views
Astronomical Society of the Pacific - 0 views
The AstroWeb Consortium - 0 views
-
The AstroWeb database of resource records is maintained by the members of the AstroWeb Consortium, at seven institutions:CDS (André Heck, Daniel Egret)MSSSO (Anton Koekemoer at MSSSO and at STScI)NRAO (Don Wells)WWW-VL (La Plata) (Sergio Paoli)ST-ECF (Hans-Martin Adorf, Fionn Murtagh)STScI (Bob Jackson)VILSPA (Jose Daniel Ponz)
The Astrophysics Spectator: Home Page - 0 views
ESA/Hubble - 0 views
The Hubble Heritage Project Website - 0 views
EarthSky.org - A Clear Voice for Science - 0 views
Bolshoi Simulation | Home - 0 views
-
The Bolshoi simulation is the most accurate cosmological simulation of the evolution of the large-scale structure of the universe yet made ("bolshoi" is the Russian word for "great" or "grand"). The first two of a series of research papers describing Bolshoi and its implications have been accepted for publication in the Astrophysical Journal. The first data release of Bolshoi outputs, including output from Bolshoi and also the BigBolshoi or MultiDark simulation of a volume 64 times bigger than Bolshoi, has just been made publicly available to the world's astronomers and astrophysicists.
[0903.4849] Dark Matter Candidates - 0 views
New Particle Collider Operating in Secret - NYTimes.com - 0 views
-
"We may not have created a black hole, but it seems we may have discovered a way for elementary particles to shape the path of evolution. You just never know what you are going to find"
Virtual Worlds May Be the Future Setting of Scientific Collaboration - 0 views
-
A team of scientists from the California Institute of Technology, Princeton, Drexel University, and the Massachusetts Institute of Technology have formed the first professional scientific organization based entirely in virtual worlds. Meta Institute for Computational Astrophysics (MICA) conducts professional seminars and popular lectures, among other events, for its growing membership.
Guest Post: Evalyn Gates on Cosmic Magnification (or - Invasion of the Giant Blue Space Amoebas) | Cosmic Variance | Discover Magazine - 0 views
-
This is not just a pretty picture, however – the image packs a lot of scientific information. The authors extract the mass distribution in the cluster (which has implications for cosmological models), measure the mass-to-light ratio of the bright galaxy in the center of the cluster, and use the magnifying power of the lens to search for even more distant galaxies. The basic idea is to construct a model of the lens, starting with the cluster galaxies and a dark matter halo; then refine the model to reproduce the multiple images that are seen. Using this refined model it’s possible to predict the location of additional images of a given source, and to identify regions of high magnification that can then be examined for multiple images of other sources. Any additional images that are found can be used to further refine the model and so on.
-
This galaxy has been lensed by the warp in spacetime created by the cluster. Light from the galaxy, which lies almost directly behind the center of the cluster but much farther away from us, travels along several curved paths through the cluster lens, producing multiple magnified images of the galaxy. The inset box shows a computer generated model of the unlensed source galaxy, enlarged by a factor of four so that the details, including the spiral arm structure, are visible. Without the lensing power of the cluster, we would see this galaxy as a single small blue smudge. In general, lensing will both magnify and distort (shear) images of a background source. This lens is fairly unique in that we see large but relatively intact images of the spiral galaxy, which implies that the mass distribution in the central region of the cluster must be nearly uniform.
« First
‹ Previous
61 - 80 of 110
Next ›
Last »
Showing 20▼ items per page