Excavations of an underwater Stone Age archaeological settlement dating back 8000 years are taking place at the National Oceanography Centre, Southampton this week (30 July - 3 August 2007).
Maritime archaeologists from the Hampshire and Wight Trust for Maritime Archaeology (HWTMA) have been working at the site just off the Isle of Wight coast. Divers working at depths of 11 metres have raised sections of the seabed, which have been brought to the NOCS laboratories for excavation.
Science & Technology
The new planet, spotted using the Hobby-Eberly Telescope at the McDonald Observatory in West Texas, circles its bloated parent star every 360 days and is located about 300 light-years away, in the constellation Perseus.
The red giant star is twice as massive and about 10 times larger than the sun. Its planet is about the size of Jupiter or larger and was discovered using the so-called wobble technique, in which astronomers look for slight wiggles in a star's motion created by the gravitational tug of orbiting planets.
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| ©NASA, ESA and A. Feild (STScI) |
| The different masses of stars. The lightest-weight stars are red dwarfs. The heaviest-weight stars are blue-white super giants. The red giant star at the bottom of the illustration is much larger than the other stars in the illustration. |
Satellite navigation systems in cars can be hijacked remotely with relative ease, allowing hackers to feed drivers bogus directions, two experts told a major security conference here.
Andrea Barisani and Daniele Bianco from the website Inverse Path demonstrated Thursday how antennas and a patchwork of commonly available electronics can be employed to replace the legitimate traffic information radioed to the systems with false instructions.
The hacker tool works on in-car Radio Data System "SatNav" devices standard in Europe, which are becoming increasingly common in North America and are due to debut this year in Australia, Barisani told security professionals meeting in Las Vegas for the Black Hat digital self-defense conference.
Andrea Barisani and Daniele Bianco from the website Inverse Path demonstrated Thursday how antennas and a patchwork of commonly available electronics can be employed to replace the legitimate traffic information radioed to the systems with false instructions.
The hacker tool works on in-car Radio Data System "SatNav" devices standard in Europe, which are becoming increasingly common in North America and are due to debut this year in Australia, Barisani told security professionals meeting in Las Vegas for the Black Hat digital self-defense conference.
Archeologists have discovered what they think are ruins of an Aztec pyramid razed by vengeful Spanish conquerors in what is now one of Mexico City's most crime-ridden districts.
Construction workers unearthed ancient walls in the busy Iztapalapa neighborhood in June, and government archeologists said on Wednesday they believe they may be part of the main pyramid of the Aztec city, destroyed by conquistador Hernan Cortes in the 16th century.
Construction workers unearthed ancient walls in the busy Iztapalapa neighborhood in June, and government archeologists said on Wednesday they believe they may be part of the main pyramid of the Aztec city, destroyed by conquistador Hernan Cortes in the 16th century.
Traffic in space is getting so congested that flight controllers in the past few weeks have had to nudge three spacecraft out of harm's way, in one case to prevent the craft from colliding with its own trash.
On July 23, controllers in Houston raised the orbit of the International Space Station by roughly five miles to avoid hitting a half-ton tank of ammonia that a spacewalking astronaut had tossed out earlier in the day while doing some housecleaning on the $100 billion outpost.
On July 23, controllers in Houston raised the orbit of the International Space Station by roughly five miles to avoid hitting a half-ton tank of ammonia that a spacewalking astronaut had tossed out earlier in the day while doing some housecleaning on the $100 billion outpost.
Advocates believe in scientific payoff; critics say mission is too dangerous
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| ©Digitalspace / DigitalSpace |
| NASA is considering sending astronauts on an asteroid mission, as illustrated here. |
Archaeologists excavating an ancient tannery believed to be the largest ever found in Rome said Tuesday they might need to move the entire work site, which is being threatened by railroad construction. The 1,255-square-yard complex includes a tannery dating to the second or third century, as well as burial sites and part of a Roman road.
Researchers from Saint Louis University (SLU) and Peking University in China are revealing for the first time the findings of a discovery that could change the way we think about the development of life on Earth. Two years ago, Timothy Kusky, Ph.D., the Paul C. Reinert Professor of Natural Sciences at SLU, and Jianghai Li, a professor of geological science at Peking University, dug up hundreds of fossilized black smoker chimneys in northern China.
Since then, the researchers have been analyzing the samples in several laboratories. The discovery is important, the researchers say, because it lends support to the theory that life on the planet developed on the sea floor.
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| ©Unknown |
| The SLU/Peking chimneys are 1.43 billion years old, the oldest such discovery on record, with previous findings dating back about 500 million years. |
Since then, the researchers have been analyzing the samples in several laboratories. The discovery is important, the researchers say, because it lends support to the theory that life on the planet developed on the sea floor.
Reef-building glass sponges were once thought to have been extinct for 100 million years. But a new live cluster of the organisms has been discovered off the west coast of the US - only the second known to exist.
Furthermore, unlike the other known glass sponge reefs in Canada, the US reefs appear to be fuelled by methane.
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| ©University of Victoria |
| Glass sponges are up to 50 centimetres high, and can build reefs up to 450 cm tall. |
Furthermore, unlike the other known glass sponge reefs in Canada, the US reefs appear to be fuelled by methane.
Space is a hostile region for both astronauts and satellites. One constituent of this hazardous environment around the Earth are very energetic electrons, which are able to perturb or permanently damage satellites. Ultra Low Frequency (ULF) waves, which travel along the Earth's magnetic field lines, are a prime candidate for generating these killer electrons, but the source of these waves remains unclear.
A recent study reveals how a rare conjunction of ground based instrumentation and a dozen satellites at a range of altitudes provide a means to trace the energy source of these waves from the solar wind into the Earth's magnetosphere down to the ground. Part of this satellite constellation, the four spacecraft of the ESA Cluster mission, was located at the border of the magnetosphere and played a major role in discriminating between the various theoretical ULF wave generation scenarios.
A recent study reveals how a rare conjunction of ground based instrumentation and a dozen satellites at a range of altitudes provide a means to trace the energy source of these waves from the solar wind into the Earth's magnetosphere down to the ground. Part of this satellite constellation, the four spacecraft of the ESA Cluster mission, was located at the border of the magnetosphere and played a major role in discriminating between the various theoretical ULF wave generation scenarios.
