Science & Technology
The telescope has opened the hatch that has been protecting its sensitive instruments from contamination. The procedure allowed light collected by Herschel's giant 3.5m mirror to flood its supercold instrument chamber, or cryostat, for the first time.
The observatory's quest is to study how stars and galaxies form, and how they evolve through cosmic time.
Western Gazette Series
Mon, 15 Jun 2009 01:54 UTC
The theory has been put forward by KwaZulu-Natal neurologist Dr Anand Moodley in a letter co-authored by Canadian neuropsychologist Neil Fournier in the latest issue of the SA Medical Journal.
Hosted by IU for the first time in the event's 12-year history, the Capra Conference each year affords scientists an opportunity to compare notes on how much closer they've come to theoretically confirming Einstein's general theory of relativity using predictions about black holes and their interactions with other stellar bodies.
By modeling the effects of gravitational waves produced when smaller black holes, neutron stars or black holes orbit massive black holes, scientists - including Jonathan Thornburg in the College of Arts and Sciences' Department of Astronomy - believe they may one day be able to quantify the stretching and compressing of spacetime as caused by those same gravitational waves predicted in Einstein's general theory of relativity.
Mon, 15 Jun 2009 00:34 UTC
Comment: And to possibly track not-so-man-made objects too?
Knowing where orbiting objects are located in space is key to ensuring safe space operations. The significance of the SSA mission has become even more acute with the recent collision of an Iridium Satellite and an inoperable Russian Cosmos Satellite, which destroyed both satellites and created two large fields of space debris.
This debris will be a risk to other satellites for years to come as the debris fields expand and their orbits degrade toward Earth.
AFSPC is exploring opportunities in academia and the commercial sector that could provide suitable cost-effective means for augmenting Space Command's Space Surveillance mission. The Allen Telescope Array (ATA), located in Northern California is one such opportunity.
Sun, 14 Jun 2009 18:26 UTC
The SMA images of V4046 Sagittarii, which are being presented by UCLA graduate student David Rodriguez in a press conference at the American Astronomical Society meeting in Pasadena, Calif., provide an unusually vivid snapshot of the process of formation of giant planets, comets, and Pluto-like bodies. The results also confirm that such objects may just as easily form around double stars as around single stars like our Sun.
"It's a case of seeing is believing," says Joel Kastner of Rochester (NY) Institute of Technology, the lead scientist on the study.
Sat, 13 Jun 2009 19:12 UTC
Over many years, Dr. Wilhelm Reich's work and findings on the orgone energy, or life-energy, have been subjected to careful scientific scrutiny and evaluation. This video gives a short introduction, and provides reference books and websites by which the interested viewer can obtain facts and accurate information.
One of my mentors and personal physician, Dr. Lee Cowden, who manages the IntegraMed Academy, has seen a small Orgone Accumulator completely resolve the inflammation of a wrist sprain injury in about 10 minutes, even though the pain and swelling had persisted unabated for three days prior to the treatment.
Thu, 11 Jun 2009 06:44 UTC
As the scientists explain in a study to be published in the European Journal of Physics, their sunlight trapping system is the optical equivalent of acoustical Dionysius' ear. The design consists of two parabolic mirrors arranged face-to-face. Sunlight first hits the larger mirror and reflects to the smaller mirror placed a short distance away. Then the light from the smaller mirror reflects back, this time being focused into the vertex of the larger mirror. By confining sunlight into this small region, scientists can ideally trap solar radiation. The sunlight is stored in a blackbody, which consists of a cavity with perfectly reflecting inner walls.
"Through a sunlight trap system, solar radiation is first concentrated in a small region of space and then sent into a blackbody, where it can be stored (not for an arbitrary long time, though) for a variety of uses," De Luca told PhysOrg.com. "For example, after having trapped sunlight in a cavity with perfectly reflecting inner walls, what we call a blackbody, one can think of heating water enclosed in a container placed inside the cavity itself. Other uses of this concept are also conceivable."
Thu, 28 May 2009 05:28 UTC
The eruptions, which spewed about 500,000 cubic kilometers (120,000 cubic miles) of lava over half a million years, killed more than half of the life on the planet in the Middle Permian period, said Paul Wignal, lead author of the study in tomorrow's edition of the journal Science. That loss of life is called the Guadalupian mass extinction.
The eruptions in southwest China's Emeishan province, which left deposits of lava 200 meters (656 feet) deep in some spots, were discovered about a decade ago and Wignal and colleagues were the first to study them, he said. What they found proved to be a rarity -- direct evidence of volcanism and a massive die- off of marine life. "This link between the extinction and the volcanoes are perfect," said Wignal, 45, who teaches at the University of Leeds in Leeds, U.K., in a telephone interview yesterday.
Thu, 11 Jun 2009 19:12 UTC
Even though this explosion was a weakling compared to most supernovae, for a short time SN 2008ha was 25 million times brighter than the sun. However, since it is 70 million light years away, it appeared very faint viewed from Earth.
The peculiar object effectively bridged the gap between a nova (a nuclear explosion on the surface of an old, compact star called a white dwarf) and a type Ia supernova (the destructive death of a white dwarf caused by a runaway nuclear reaction starting deep in the star). SN 2008ha likely was a failed supernova where the explosion was unable to destroy the entire star.