Home Mars' Tyrrhena Terra --Proof of Ancient Water Systems The 621 mile-by-1,240 mile (1,000 by 2,000-kilometer) region of Tyrrhena Terra (outlined by the white box in the inset) sits between two regions of low altitude in Mars' southern hemisphere, as shown in this global topography map. Hydrated minerals were found in 175 locations associated with impact craters in Tyrrhena Terra. In a new study, ESA’s Mars Express and NASA’s Mars Reconnaissance Orbiter zoomed in on craters in on these ancient southern highlands to learn more about the history of water in this region. By studying rocks blasted out of impact craters, ESA’s Mars Express has found evidence that underground water persisted at depth for prolonged periods during the first billion years of the Red Planet’s existence. Impact craters are natural windows into the history of planetary surfaces – the deeper the crater, the further back in time you can probe. Rocks blasted out during the impact offer a chance to study material that once lay hidden beneath the surface.
The Sky Tonight - Astronomy News UK, Night Sky, Celestial Events, Images, Books and Star Naming Service Northern Hemisphere Ian Morison tells us what we can see in the northern hemisphere night sky during September 2015. The Stars To the south and moving westward as night progresses you may see the Summer Triangle: the bright stars Deneb (in Cygnus), Vega (in Lyra) and below them Altair (in Aquila). The Planets Jupiter reached superior conjunction on August 26th, and now rises shortly before the sun. The Moon On September 4th and 21st you may spot The Alpine Valley, a cleft across the Appenine mountain chain. Highlights Neptune came into opposition on the 29th of August, so will be seen well this month. Southern Hemisphere Haritina Mogosanu from the Carter Observatory in New Zealand speaks about the southern hemisphere night sky during September 2015. The Milky Way At the beginning of springtime here, the Milky Way spans the sky from north to south going through Zenith. Many of the brightest stars are scattered along or near the Milky Way. Globular Clusters The Moon and Planets
Space news on space exploration and space flight | sen.com SpaceWeather.com -- News and information about meteor showers, s Welcome to Explorations in Science with Dr. Michio Kaku Photo by redbullstratos astronomy magazine NASA's New Horizons spacecraft is three months from returning to humanity the first-ever close-up images and scientific observations of distant Pluto and its system of large and small moons. "Scientific literature is filled with papers on the characteristics of Pluto and its moons from ground-based and Earth-orbiting space observations, but we've never studied Pluto up close and personal," said John Grunsfeld of the NASA Science Mission Directorate at the agency's headquarters in Washington, D.C. "In an unprecedented flyby this July, our knowledge of what the Pluto system is really like will expand exponentially, and I have no doubt there will be exciting discoveries." The fastest spacecraft ever launched, New Horizons has traveled a longer time and farther away — more than nine years and 3 billion miles (5 billion kilometers) — than any space mission in history to reach its primary target. Pluto's smaller moons also are likely to present scientific opportunities.