Search results for hydrogen:
'Dropouts' pinpoint earliest galaxies
Nov 06, 2009 |
4.2 / 5 (10) |
13
Astronomers, conducting the broadest survey to date of galaxies from about 800 million years after the Big Bang, have found 22 early galaxies and confirmed the age of one by its characteristic hydrogen signature ...
Computer predicts reactions between molecules and surfaces, with 'chemical precision'
Chemistry / Analytical Chemistry
Nov 06, 2009 |
5 / 5 (1) |
0
Good news for heterogeneous catalysis and the hydrogen economy: computers can now be used to make accurate predictions of the reactions of (hydrogen) molecules with surfaces. An international team of researchers, headed by ...
Rapid supernova could be new class of exploding star
Nov 05, 2009 |
4.7 / 5 (17) |
5
(PhysOrg.com) -- An unusual supernova rediscovered in seven-year-old data may be the first example of a new type of exploding star, possibly from a binary star system where helium flows from one white dwarf ...
How Size Matters For Catalysts: Study Links Size, Activity, Electronic Properties
Nanotechnology / Nanomaterials
Nov 05, 2009 |
3.7 / 5 (3) |
0
(PhysOrg.com) -- University of Utah chemists demonstrated the first conclusive link between the size of catalyst particles on a solid surface, their electronic properties and their ability to speed chemical ...
Hubble Image Showcases Star Birth in M83, the Southern Pinwheel
Nov 05, 2009 |
4.6 / 5 (9) |
1
(PhysOrg.com) -- The spectacular new camera installed on NASA's Hubble Space Telescope during Servicing Mission 4 in May has delivered the most detailed view of star birth in the graceful, curving arms of ...
Carbon Atmosphere Discovered on Neutron Star
Nov 04, 2009 |
4.7 / 5 (19) |
1
(PhysOrg.com) -- Evidence for a thin veil of carbon has been found on the neutron star in the Cassiopeia A supernova remnant. This discovery, made with NASA's Chandra X-ray Observatory, resolves a ten-year ...
Mimicking nature, scientists can now extend redox potentials
Nov 04, 2009 |
4.8 / 5 (5) |
0
(PhysOrg.com) -- New insight into how nature handles some fundamental processes is guiding researchers in the design of tailor-made proteins for applications such as artificial photosynthetic centers, long-range ...
New evidence supports 19th century idea on formation of oil and gas
Chemistry / Analytical Chemistry
Nov 04, 2009 |
4 / 5 (2) |
1
Scientists in Washington, D.C. are reporting laboratory evidence supporting the possibility that some of Earth's oil and natural gas may have formed in a way much different than the traditional process described ...
Toward home-brewed electricity with 'personalized solar energy'
Nov 04, 2009 |
3.4 / 5 (9) |
4
New scientific discoveries are moving society toward the era of "personalized solar energy," in which the focus of electricity production shifts from huge central generating stations to individuals in their ...
Not just bleach: Hydrogen peroxide may tell time for living cells
Nov 03, 2009 |
4.6 / 5 (7) |
2
If a circadian rhythm is like an orchestra - the united expression of the rhythms of millions of cells - a common chemical may serve as the conductor, or at least as the baton.
Stars Fueled by Dark Matter Could Hold Secrets to the Universe
Nov 03, 2009 |
4.5 / 5 (51) |
41
(PhysOrg.com) -- The first stars in the universe may have been very different from the stars we see today, yet they may hold clues to understanding some of the mysterious features of the universe. These "dark ...
High-performance plasmas may make reliable, efficient fusion power a reality
Nov 02, 2009 |
4.7 / 5 (40) |
34
In the quest to produce nuclear fusion energy, researchers from the DIII-D National Fusion Facility have recently confirmed long-standing theoretical predictions that performance, efficiency and reliability ...
The Ring Nebula
Nov 02, 2009 |
4.3 / 5 (7) |
2
The diversity of colours, shapes, and sizes of planetary nebulae make them fascinating objects. In this photo release Calar Alto presents a rather unique view combining both optical and near-infrared data ...
Dark Matter in a Galaxy
Oct 30, 2009 |
4 / 5 (19) |
19
(PhysOrg.com) -- Stars, the most familiar objects in the night sky, make up only a tiny percentage of the total amount of matter in the universe -- about 2%.
Ancient ocean chemistry: Effects of biological oxygen production 100 million years before it accumulated in atmosphere
Space & Earth / Earth Sciences
Oct 29, 2009 |
4.8 / 5 (13) |
4
(PhysOrg.com) -- Scientists widely accept that around 2.4 billion years ago, the Earth's atmosphere underwent a dramatic change when oxygen levels rose sharply. Called the "Great Oxidation Event" (GOE), the ...
