Urban areas are currently responsible for ~70% of the global energy-related carbon dioxide (CO2) emissions, and rapid ongoing global urbanization is increasing the number and size of cities. Thus, understanding city-scale CO2 emissions and how they vary between cities with different urban densities is a critical task. While the relationship …
The US National Aeronautics and Space Administration (NASA) says it wants Russia to abandon its Mir space station so it will not be in competition with its international successor. Paradoxically, NASA officials are considering another space shuttle mission to Mir. The proposed mission would retrieve a docking module which, according …
for the National Space and Aeronautics Administration (nasa ), 1999 began with a bang. On January 4, the ambitious Mars Polar Lander took off successfully from the Kennedy Space Centre at Cape Carnival, Florida, usa. It is expected to touch down on Mars on December 3, 1999, after releasing a …
The us National Aeronautics and Space Administration ( nasa) and Central American Commission on the Environment and Development ( ccad ) will use existing satellite data to develop land-use maps of Central America. nasa and ccad recently signed a memorandum of understanding at the nasa headquarters in Washington , usa. …
So your days seem too long and never end? Scientists at US National and Space Administration's (NASA!s) let Propulsion Laboratory in Pasadena, California, have discovered the real culprit. They have shown that tiny changes in the Earth's rotation match those predicted by the computer- generated models of oceanic circulation. The …
WAGES from the Galileo spacecraft show conclusively that the three faint rings around Jupiter come from moon dust spiralling down into the planet's atmosphere. No one knew that the rings existed until the Voyager spaceprobe few by the planet in 1979. The dusty rings are visible only when light hits …
Now global positioning system (GPS) satellites can also give you a weather report for all you sea-faring people. This could provide a low- cost alternative to weather buoys and expensive radar satellites that are conventionally used for predict- ing bad weather. GPS signals from the ground are usually consid- ered …
BLACK HOLES are the darkest objects in the Cosmos and in our understanding. Scientists conjecture that these compact objects are formed when a dying star explodes and the matter collapses in a very small region of space. The matter density is so high that the gravity of the object is …
Controllers of the ill-fated Solar and Heliospheric Observatory (SOHO) are struggling to bring the spacecraft under control. Mission controllers lost the craft at the end of June, but regained contact recently. However, the craft is spinning in such a way that its solar power cells get very little sunlight. The …
In 1976 NASA's Viking spacecraft snapped a photograph of a feature on Mars that was startlingly familiar to all Earthlings: part of the rocky surface looked just like a human face. Most interpreted this Martian Mount Rushmore as a trick of light and shadow, but others credited it to alien …
Twelve billion light-years away, it was the biggest cosmic explosion since the Big Bang, the initial explosion that started it all, say astronomers. Astronomers S George Djorgovski and Srinivas R Kulkarni of the California Institute of Technology in California, USA, reported that the gammaray burst detected in December 14, 1997, …
launch pads, manned colonies and perhaps even luxury sight-seeing tours. Yes, all this and more on the Moon - the most happening satellite ever since the us National Aeronautics and Space Administration (nasa) lunar probe discovered what the scientists had always expected our Moon to possess: plain, simple water. Only …
A global positioning system (gps) receiver, a laptop computer and some software can be used to warn pilots if they are flying too close to the ground. California-based Dubbs and Severino has developed the software from technology originally researched by the US National Aeronautics and Space Administration. Military pilots are …
The US National Aeronautics and Space Administration has fixed the orbit of its Mars Global Surveyor so that the spaceprobe can spend this summer clicking snaps of the Martian landscape, including the controversial "Face on Mars', spotted years back by the Viking mission. Other targets include the nostalgic Viking and …
two new findings by astronomers have raised hopes of discovering life elsewhere in the Universe. The first is the discovery of water vapour around stars, planets and their satellites by the European Space Agency's Infrared Space Observatory, which orbits the Earth. The second is a snapshot taken by us National …
A radar of the National Aeronautics Space Administration (NASA) has found long-lost ruins of temples in the jungles at Angkor, Cambodia. In the 12th century, nearly one million people were staying in the city. Scientists at the NASA have located two temple sites that are very close to each other. …
scientists have discovered new evidence of a prehistoric civilisation and remnants of ancient temples in Angkor, Cambodia. For this purpose, they have used highly detailed maps produced with data from an airborne imaging radar instrument created by the National Aeronautics and Space Administration (nasa). Scientists say the finding was made …
scientists feel that it is possible to trap solar power in outer space, beam it to the Earth, and convert it into electricity. With the help of latest techniques, they hope that solar energy could be delivered at prices equal to or even lower than ground-based alternatives without big environmental …
A recent NASA study indicates that a new multinational space station project in which the US, Russia, Japan and Europe are the major players will be the biggest technological project ever undertaken. However, researchers fear that the space station may not be adequately protected from micrometeoroids and other debris. The …
astronomists across the world are agog over the comet Hale-Bopp, as during its current run over the Earth, it is spewing tonnes of organic chemicals which could have been the building blocks of life. It is after nearly 4,000 years that Hale-Bopp, a 40-km-wide cosmic snowball of ice and dust, …
