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YESTERDAY'S SPACE
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![]() It's very hard to foresee just how far and how sweeping the recommendations for change ultimately produced by the Columbia Accident Investigation Board will go, writes Bruce Moomaw. If the Board concludes that the Shuttle is a dangerous vehicle and needs more than limited changes to make it less dangerous, that fact alone will place enormous pressure on NASA and the federal government to follow its recommendations. And any honest appraisal of the Shuttle cannot help but reach such a conclusion. |
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![]() ![]() Until recently Mars was regarded as a cold, arid world that had lost most of its water long ago. However, recent observations by NASA's Mars Global Surveyor and Mars Odyssey spacecraft have provided tantalising evidence that huge amounts of water may be hidden just below the surface. GALEX Spacecraft To Be Launched Aboard Pegasus XL April 28 ![]() The Galaxy Evolution Explorer is slated for launch April 28 at 8am EDT aboard a Pegasus air-drop vehicle. The launch provider Orbital Sciences says a launch window opens at 7:50am and closes at 9:50am. |
Sun's Role In Climate Change Continues To Spark Controversy![]() Has an increasing trend in the Sun's brightness contributed to global warming over the last few decades? One study published recently says it has but Judith Lean told a joint session of the UK/Ireland National Astronomy Meeting and Solar Physics Meeting in Dublin that a different study has come to the opposite conclusion when she tackled the controversial topic of the relationship between our climate and the Sun on Tuesday 8 April. Evaluating The Threat From Earth's Radiation Belts ![]() Near-Earth space can be a very dangerous place for both astronauts and satellites. One of the most hazardous environments is the van Allen belts, a doughnut-shaped region, filled with trapped energetic particles, which surrounds the Earth. |
A UK Flotilla To Study Earth-Grazing Asteroids![]() On 30 June 1908, the seemingly endless forests of Siberia received an unwelcome and unexpected visit by an intruder from deep space. As it plunged headlong through the Earth's atmosphere, the incoming asteroid exploded a few miles above the tree tops, flattening the forest over an area about 50 km (30 miles) in diameter. If the 60 metre (200 ft) wide chunk of rock had arrived a few hours later, it could have destroyed a city the size of London or Paris. |
![]() Air France and British Airways announced last week that they will retire the Concorde supersonic jetliner. Hopefully, both NASA and the "build it and they will come" rocket boys are paying close attention, asks John Carter McKnight |
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