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After mastodons and mammoths, a transformed landscape
And when their populations crashed, emptying a land whose diversity of large animals equaled or surpassed Africa's wildlife-rich Serengeti plains then or now, an entirely novel ecosystem emerged ...
Earth Sciences |
Read moreESA spacecraft may help unravel cosmic mystery
Since 1990, scientists and mission controllers at ESA and NASA have noticed that their spacecraft sometimes experience a strange variation in the amount of orbital energy they exchange with Earth duri...
Physics and Astronomy | Read moreRosetta bound for outer Solar System after final Earth swingby
Rosetta passed over the ocean, just South of the Indonesian island of Java, at exactly 08:45:40 CET, at a speed of 13.34 km/s with respect to Earth at an altitude of 2481 km. The swingby was pre-plann...
Physics and Astronomy | Read moreFollow Rosetta’s final Earth boost
This will be the third Earth swingby, the last of Rosetta’s four planetary gravity assists. Closest approach to Earth is expected at 08:45 CET (07:45 UT). The swingby will provide exactly the boost Ro...
Physics and Astronomy | Read moreA Long Night Falls Over Saturn's Rings
This happens during Saturn's equinox, when the sun is directly over Saturn's equator. At this time, the rings, which also orbit directly over the planet's equator, appear edge-on to the...
Physics and Astronomy | Read moreLast visit home for ESA’s comet chaser
This will be the third Earth swingby, the last of Rosetta’s four planetary gravity assists. Closest approach to Earth is expected at 08:45 CET. The swingby will provide exactly the boost Rosetta needs...
Physics and Astronomy | Read moreCassini Helps Redraw Shape of Solar System
Images from one of the Magnetospheric Imaging Instrument’s sensors, the Ion and Neutral Camera (MIMI/INCA), on NASA’s Cassini spacecraft suggest that the heliosphere may not have the comet-like shape ...
Physics and Astronomy | Read moreNASA Goddard visualization team previews lunar impact
The event is the highlight of NASA's Lunar Crater Observation and Sensing Satellite (LCROSS) mission. The LCROSS spacecraft flies behind its empty upper stage, which is targeted to strike the flo...
Physics and Astronomy | Read moreSea level stargazing: Astronomers make key sighting with Florida telescope
But it was a far more modest observatory, located just above sea level in rural Levy County and just down the road from the UF campus, that proved key to a new discovery about what one astronomer term...
Physics and Astronomy | Read moreCU-Boulder space scientists set for final spacecraft flyby of Mercury
The spacecraft will zip within 142 miles of the planet's surface at more than 100,000 miles per hour on Sept. 29, taking high-resolution color images of the surface terrain. MESSENGER also will b...
Physics and Astronomy | Read moreTwin Keck Telescopes Probe Dual Dust Disks
The centerpiece of the study is the Keck Interferometer Nuller (KIN), a device that combines light captured by both of the giant telescopes in a way that allows researchers to study faint objects othe...
Physics and Astronomy | Read moreDeep Impact and Other Spacecraft Find Clear Evidence of Water on Moon
"The Deep Impact observations of the Moon not only unequivocally confirm the presence of OH/H2O on the lunar surface, but also reveal that the entire lunar surface is hydrated during at least som...
Physics and Astronomy | Read moreESO unveils an amazing, interactive, 360-degree panoramic view of the entire night sky
The project allows stargazers to explore and experience the Universe as it is seen with the unaided eye from the darkest and best viewing locations in the world.This 360-degree panoramic image...
Physics and Astronomy | Read moreNew System Tests Water Quality in Orbit
“Now they bring water back on the space shuttle and analyze it on the ground. The problem is there is a big delay. You’d like to be able to maintain iodine or silver [disinfectant] levels in real time...
Life Sciences | Read moreRebirth of an icon: Hubble's first images since Servicing Mission 4
"This is one more important step in the confirmation of this wonderful mission. We Europeans are proud to be part of this and heartily congratulate the engineers, astronauts and scientists who go...
Physics and Astronomy | Read more
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