News articles tagged with 'density' (Page 8)
A potential hydrogen-storage compound
— 3 Apr 2008 01:32 | ChemistryOne of the key engineering challenges to building a clean, efficient, hydrogen-powered car is how to design the fuel tank. Storing enough raw hydrogen for a reasonable driving range…
Saturn has a 'giant sponge'
— 6 Feb 2008 16:12 | AstronomyOne of Saturn's rings does housecleaning, soaking up material gushing from the fountains on Saturn's tiny ice moon Enceladus, according to new observations from the Cassini spacecraft.…
Drought length influences survival of fish in stream pools
— 17 Jan 2008 07:35 | BiologyUniversity of Arkansas researchers have found that not all pools of water are equal from year to year when it comes to housing fish species during dry spells - a finding that becomes…
Solving solar system quandaries is simple
— 12 Dec 2007 00:43 | AstronomyQuick: What's the order of the planets in the solar system? Need a little help? Maybe the following mnemonic rings a bell: 'My Very Educated Mother Just Served Up Nine Pizzas.' It's…
Images of small moons of Saturn tell the story of their origins
— 7 Dec 2007 00:47 | AstronomyImaging scientists on NASA's Cassini mission are telling a tale of how the small moons orbiting near the outer rings of Saturn came to be. The moons began as leftover shards from larger…
Mapping the Martian ionosphere
— 16 Nov 2007 15:05 | AstronomyWith ESA's Mars Express, scientists continue to gain new insight into the mysterious Martian environment. Some of the most exciting results are being sent back by the MARSIS (Mars Advanced…
Ranching as a means of conservation
— 14 Nov 2007 11:45 | EnvironmentRanch families working viable ranches that sustain ecosystem services and contribute to the social fabric and local economies are critical to a West that works, says Dr Richard Knight.…
Seismologists see Earths interior as interplay between temperature, pressure and chemistry
— 25 Oct 2007 21:51 | Geology and palaeontologySeismologists in recent years have recast their understanding of the inner workings of Earth from a relatively benign homogeneous environment to one that is highly dynamic and chemically…
Is dark energy constant?
— 12 Oct 2007 11:06 | AstronomyNearly a decade ago, astronomers discovered the surprising existence of dark energy - a mysterious force that pushes galaxies apart and accelerates the expansion of the universe. Also…
Significant new method for characterising density wave features
— 9 Jul 2007 22:15 | AstronomyIn a paper published in The Astronomical Journal Dr Xiaolei Zhang, of the Naval Research Laboratory, and Dr Ronald J. Buta, of the University of Alabama, report that they have developed…