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Bread-loaf-sized satellite Firefly on lightning & gamma rays (photon of penetrating electromagnetic radiation fr atomic nucleus)
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Firefly is a new mission to study lightning and gamma rays with CubeSats, small satellites in the shape of a cube.
Firefly, it's called, this new small satellite mission sponsored by the National Science Foundation (NSF). It's designed to help solve the mystery of the most powerful natural particle accelerator in Earth's atmosphere: TGFs, or terrestrial gamma-ray flashes. TGFs likely result from thunderstorms.
The mission is the second project under the new NSF CubeSat program. A CubeSat satellite, about the size of a loaf of bread, consists of three cubes attached end to end in a rectangular shape.
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Photo courtesy of NASA/GSFC
Original Source: National Science Foundation
Aircraft & spacecraft once swiftest or slowest, graceful or ungainly, at standstill as if plucked from sky: Air and Space Museum
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The first thing visitors encounter in the main display area of the Udvar-Hazy Center, the National Air and Space Museum annex near Dulles airport in the Virginia countryside, is a huge black spy plane. It’s an SR-71A Blackbird, the ultimate hot-rod aircraft, one of about 30 built at the Lockheed Skunk Works in California in the 1960s. This one last flew in 1990, traveling the 2,300 miles between Los Angeles and Washington in 1 hour 4 minutes 20 seconds - a transcontinental blur.
But now it’s at a standstill, giving visitors the chance to appreciate its outrageousness. There are the two massive engines on short, stubby wings; the tiny cockpit where the two-man crew was shoehorned in wearing bulky pressure suits; and the sweeping titanium fuselage that was built so loosely, to allow for expansion in the heat of supersonic flight, that the fuel tanks that made up the bulk of the plane routinely leaked, losing as much as 600 pounds of fuel taxiing to the runway.
A sweeping prominence, a huge cloud of relatively cool dense plasma is seen suspended in the Sun's hot, thin corona
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A sweeping prominence, a huge cloud of relatively cool dense plasma is seen suspended in the Sun's hot, thin corona. At times, prominences can erupt, escaping the Sun's atmosphere. Emission in this spectral line shows the upper chromosphere at a temperature of about 60,000 degrees K (over 100,000 degrees F). Every feature in the image traces magnetic field structure. The hottest areas appear almost white, while the darker red areas indicate cooler temperatures.
The Sun is now in the quietest phase of its 11-year activity cycle, the solar minimum - in fact, it has been unusually quiet this year - with over 200 days so far with no observed sunspots. The solar wind has also dropped to its lowest levels in 50 years. Scientists are unsure of the significance of this unusual calm, but are continually monitoring our closest star with an array of telescopes and satellites. Seen here are some recent images of the Sun in more active times.
A transit of the Moon across the face of the Sun on February 25, 2007 - but not seen from Earth. This sight was visible only from the STEREO-B spacecraft in its orbit about the sun, trailing behind the Earth. NASA's STEREO mission consists of two spacecraft launched in October, 2006 to study solar storms. STEREO-B is currently about 1 million miles from the Earth, 4.4 times farther away from the Moon than we are on Earth. As the result, the Moon appears 4.4 times smaller than what we are used to. (NASA/STEREO) read more »
World's most exclusive club: Russia, US, now China have technology to allow their astronauts to walk in space
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China left its mark in space history Saturday, successfully turbocharging its space program into an orbit that could see a Chinese man walk on the moon before the U.S. has a chance to get back there in 2020.
Shenzhou Vll has been successfully orbiting 343 kilometres above Earth every 90 minutes since it blasted off from the Jiuquan launch centre in northwest Gansu province on Thursday night. It was in its 29th orbit when Zhai made his historic walk. China sent its first man into space in 2003. Two more went up in 2005 and the trio this year are on the country's third manned mission.
When Zhai stepped out of the capsule, he confirmed China's membership in the world's most exclusive club: only Russia and the United States have the technology to allow their astronauts to walk in space.
Russia: Alexey Leonov, the pioneer (March, 1965) read more »
Countdown begins for China’s first spacewalk: Shenzhou-7 spaceship launches into orbit with 3 Chinese astronauts
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After three decades of hoping, 10 years of training, and at least 12 hours preparing his spacesuit, Zhai Zhigang is expected to make history in just 20 minutes tomorrow as the first Chinese astronaut to do a space walk. The 42-year-old former fighter pilot will don a £2m, ten-layered Chinese-designed suit, weighing 120kg (265lb), to exit the Shenzhou VII module.
The Chinese Shenzhou VII spacecraft blasted off at 9:07 p.m. Thursday, carrying three Chinese astronauts into space on this country’s third manned space mission in five years. The Chinese government has spent billions of dollars in recent years building up a space program that it hopes will help China establish a space station by 2020 and eventually will put a man on the moon, accomplishments that would certainly bring the country international prestige.
Large Hadron Collider hibernates after wrong sort of big bang caused by hellion leak, to re-awaken in Spring'09
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Two weeks ago, the most powerful atom smasher to be built had been switched on to global acclaim and scientists were ready to begin experiments that could unlock many of the enduring mysteries of the Universe. They are going to have to wait a little longer. On Friday the Large Hadron Collider (LHC) created the wrong sort of big bang - a fault so serious that CERN, the European Organization for Nuclear Research, announced last night that the particle accelerator would have to be shut down until next spring for repairs.
Preliminary investigations into the incident, in which a huge quantity of helium leaked from the LHC’s cooling system, have suggested that it was caused by a faulty electrical connection between two of its superconducting magnets. The fault affected a part of the accelerator that is kept chilled to within 1.9C of absolute zero, and it will have to be warmed up to room temperature before the problem can be understood fully and resolved. It will take at least three to four weeks to warm the affected sector and then to open the damaged magnets for inspection, and then another month to re-chill them to their operating temperature. read more »
Biggest physics experiment in history underway: Large Hadron Collider passes operational test, fires first beam
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There was screaming and whistling in physics labs and auditoriums outside Geneva - and around the world - Wednesday, as scientists whooped it up out of sheer joy.
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