http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (Phys.org) —A gauge on the Voyager home page, http://voyager.jpl.nasa.gov, tracks levels of two of the three key signs scientists believe will appear when the spacecraft leave our solar neighborhood and enter interstellar space. http://phys.org/news286098155.html Space & Earth Thu, 25 Apr 2013 09:30:01 EST news286098155 The US space agency on Wednesday denied a claim made in a scientific study that its Voyager 1 spacecraft had left the solar system, describing the report as "premature." http://phys.org/news283018176.html Space & Earth Wed, 20 Mar 2013 17:09:43 EST news283018176 (Phys.org)—Using ESA's Cluster quartet of satellites as a space plasma microscope, scientists have zoomed in on the solar wind to reveal the finest detail yet, finding tiny turbulent swirls that could play a big role in heating it. http://phys.org/news275123990.html Space & Earth Wed, 19 Dec 2012 07:20:05 EST news275123990 ESA's quartet of satellites studying Earth's magnetosphere, Cluster, has discovered that our protective magnetic bubble lets the solar wind in under a wider range of conditions than previously believed. http://phys.org/news270300362.html Space & Earth Wed, 24 Oct 2012 12:26:31 EST news270300362 (Phys.org)—Four decades of active research and debate by the solar physics community have failed to bring consensus on what drives the sun's powerful coronal mass ejections (CMEs) that can have profound "space weather" effects on Earth-based power grids and satellites in near-Earth geospace. http://phys.org/news267709493.html Physics Mon, 24 Sep 2012 12:45:03 EST news267709493 (Phys.org) -- Recent findings from NASA's Cassini mission reveal that Saturn's geyser moon Enceladus provides a special laboratory for watching unusual behavior of plasma, or hot ionized gas. In these recent findings, some Cassini scientists think they have observed "dusty plasma," a condition theorized but not previously observed on site, near Enceladus. http://phys.org/news257696769.html Space & Earth Thu, 31 May 2012 15:26:15 EST news257696769 For the last few decades, space scientists have generally accepted that the bubble of gas and magnetic fields generated by the sun – known as the heliosphere – moves through space, creating three distinct boundary layers that culminate in an outermost bow shock. This shock is similar to the sonic boom created ahead of a supersonic jet. Earth itself certainly has one of these bow shocks on the sunward side of its magnetic environment, as do most other planets and many stars. A collection of new data from NASA's Interstellar Boundary Explorer (IBEX), however, now indicate that the sun does not have a bow shock. http://phys.org/news255875949.html Space & Earth Thu, 10 May 2012 14:00:20 EST news255875949 US researchers have demonstrated the potential use of a new way to measure properties of Earth's magnetosphere, the magnetic bubble that surrounds the planet. http://phys.org/news244893497.html Space & Earth Wed, 04 Jan 2012 09:58:33 EST news244893497 (PhysOrg.com) -- NASA's Cassini spacecraft is set to skim close to Saturn's moon Titan on Friday, Feb. 18, to learn about the interaction between Titan and Saturn's magnetosphere, the magnetic bubble around the planet. http://phys.org/news217256012.html Space & Earth Fri, 18 Feb 2011 12:53:42 EST news217256012 (PhysOrg.com) -- NASA's Cassini spacecraft has successfully completed its closest flyby of Saturn's moon Rhea, returning raw images of the icy moon's surface. http://phys.org/news214222521.html Space & Earth Fri, 14 Jan 2011 10:15:37 EST news214222521 Researchers at the Princeton Plasma Physics Laboratory have successfully used Coaxial Helicity Injection (CHI) to generate plasma current and couple it to a conventional current generation method at the National Spherical Torus Experiment (NSTX) fusion experiment. After coupling, the combined process generated 1 million amperes of current using 40 percent less energy than needed to generate this current using the conventional means by itself, thus demonstrating that a high-quality initial magnetic configuration was produced by CHI. http://phys.org/news208423649.html Physics Mon, 08 Nov 2010 07:31:14 EST news208423649 Turning a midsummer night's dream into reality, NASA's Cassini spacecraft begins its new mission extension -- the Cassini Solstice Mission -- today. The mission extension will take Cassini a few months past Saturn's northern summer solstice (or midsummer) through September 2017. It will enable scientists to study seasonal changes and other long-term weather changes on Saturn and its moons. http://phys.org/news204887163.html Space & Earth Tue, 28 Sep 2010 10:06:21 EST news204887163 (PhysOrg.com) -- ESA's pioneering Cluster mission is celebrating its 10th anniversary. During the past decade, Cluster's four satellites have provided extraordinary insights into the largely invisible interaction between the Sun and Earth. http://phys.org/news198509510.html Space & Earth Fri, 16 Jul 2010 14:50:01 EST news198509510 (PhysOrg.com) -- As American schoolchildren head out to pools for a summer splash, NASA's Cassini spacecraft will be taking its own deep plunge through the Titan atmosphere this week. http://phys.org/news197646453.html Space & Earth Tue, 06 Jul 2010 15:10:01 EST news197646453 Take a bunch of fast-moving electrons, place them in orbit and then hit them with the shock waves from a solar storm. What do you get? Killer electrons. That's the shocking recipe revealed by ESA's Cluster mission. http://phys.org/news187527709.html Space & Earth Thu, 11 Mar 2010 11:02:12 EST news187527709 (PhysOrg.com) -- When it flies by Saturn's largest moon, Titan, this weekend, NASA's Cassini spacecraft will study the interactions between the magnetic field of Saturn and Titan. The flyby will take place the evening of Dec. 11 California time, or shortly after midnight Universal Time on Dec. 12. http://phys.org/news180032789.html Space & Earth Mon, 14 Dec 2009 17:40:02 EST news180032789 (PhysOrg.com) -- In the first video showing the auroras above the northern latitudes of Saturn, Cassini has spotted the tallest known "northern lights" in the solar system, flickering in shape and brightness high above the ringed planet. http://phys.org/news178303936.html Space & Earth Tue, 24 Nov 2009 16:53:17 EST news178303936 Scientists using the Cassini spacecraft's  Magnetospheric Imaging instrument (MIMI) have detected a new, temporary radiation belt  at Saturn, located around the orbit of its moon Dione at about 377 000 km from the center of the planet. The discovery will be presented at the European Planetary Science Congress in Potsdam by Dr Elias Roussos on Monday 14 September. http://phys.org/news172139487.html Space & Earth Mon, 14 Sep 2009 09:32:31 EST news172139487 (PhysOrg.com) -- Scientists have found that extreme solar activity drastically compresses the magnetosphere and modifies the composition of ions in near-Earth space. They are now looking to model how these changes affect orbiting satellites, including the GPS system. http://phys.org/news160223027.html Space & Earth Wed, 29 Apr 2009 11:24:20 EST news160223027 According to the international space agencies, "Space Weather" is the single greatest obstacle to deep space travel. Radiation from the sun and cosmic rays pose a deadly threat to astronauts in space. http://phys.org/news145004546.html Physics Tue, 04 Nov 2008 07:02:26 EST news145004546