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pacome delva

Accurate light-time correction due to a gravitating mass - 1 views

  • The Orbit Determination Program (ODP) of NASA's Jet Propulsion Laboratory, which was used in the data analysis, is based on an expression for the gravitational delay which differs from the standard formula; this difference is of second order in powers of $m$ -- the sun's gravitational radius -- but in Cassini's case it was much larger than the expected order of magnitude $m^2/b$, where $b$ is the ray's closest approach distance. Since the ODP does not account for any other second-order terms, it is necessary, also in view of future more accurate experiments, to systematically evaluate higher order corrections and to determine which terms are significant.
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    Some other crazy guys interested in high precision measurement of time of flight...
Nina Nadine Ridder

Koreans plan space tours - Cosmic Log - msnbc.com - 0 views

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    XCOR Aerospace and Yecheon Astro Space Center plan regular tours to edge of outer space; first flight expected in 2012-2013
Luís F. Simões

Boeing probes international market for human spacecraft - 1 views

  • The aerospace powerhouse is designing and testing systems for its CST-100 space capsule, a craft the company says could begin flying astronauts to low Earth orbit by 2015. It will launch on existing rockets to lessen development risk and costs.
  • "The spacecraft that we're designing is rocket-agnostic. It would be possible to sell this like a commercial airplane to countries who perhaps have a launch vehicle who would like to launch it in their own country."
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    ...and hitting the news in the same day: A Rocket Built from U.S. and European Parts "A new rocket that would combine parts from NASA's canceled Ares I rocket as well as the Ariane 5 , a well-proven European satellite launcher, could provide a low-cost option for taking crew and cargo to the space station. The rocket proposal was announced this week by ATK, an aerospace and defense company that manufactures the solid rocket motors for NASA's space shuttles, and Astrium, the European company that makes the Ariane 5. They say the rocket, called Liberty, would be ready for flight by 2015." "Other commercial companies, including Boeing and Orbital Sciences Corporation, are looking to use low-end versions of the Atlas V to carry the capsules they are building. Liberty could carry any capsule at a cost less than that of the Atlas V, according to ATK." Look! Competition! :)
Francesco Biscani

TinKode - Security Blog » Blog Archive » NASA Goddard Space Flight Center - F... - 0 views

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    The same guy that got ESRIN's server apparently got also a NASA one... An example of ESA leading the way, for once.
LeopoldS

NASA - Green Flight Challenge - 0 views

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    new challenge among the NASA centennial challenges ...
Kevin de Groote

For NASA Employees, It's "Spacebook" Not Facebook - 0 views

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    At NASA's Goddard Space Flight Center in Maryland, employees can now log on to their own intranet portal designed for group collaboration, social bookmarking, and general employee-to-employee ...
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    and we are late again!!!!
Francesco Biscani

Slashdot Hardware Story | Robotic Glider Set To Break Autonomous Flight Records - 0 views

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    Pretty amazing.
LeopoldS

Video: Pentagon's Cyborg Beetle Takes Flight | Danger Room | Wired.com - 0 views

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    wow!!!
nikolas smyrlakis

The Space Elevator Games - 0 views

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    July 14, 2009 NASA Dryden Flight Research Center, Edwards Air Force Base, Mojave, CA 6 Teams [KCSP, LM, USST, NSS, McGill, U MICH] 1 km vertical raceway, laser-powered vehicles $2,000,000 Total prize purse (two levels)
ESA ACT

B Palermo, aereo rientra in pista - cronaca - Repubblica.it - 0 views

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    It is a bout a commercial aircraft which encounterd a bird swarm during flight and was forced to go back to the departure point.
ESA ACT

heise online - Per Flugzeug durch Google Earth - 0 views

shared by ESA ACT on 24 Apr 09 - Cached
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    Flight simulator in Google Earth.
pacome delva

Physics - Fruit flies swim through air - 1 views

  • A new experiment reported in Physical Review Letters shows that—contrary to popular wisdom—paddling can be as effective in air as it is in water. This could imply that insects evolved their flight capability from some earlier swimming trait.
  • Using high-speed video cameras to track wing motion, the team observed certain cases where the flies paddled their wings forward and backward. To confirm that this was indeed drag-based motion, the team plugged their wing data into an “insect flight simulator” and found that they could reproduce the fly’s overall movement. The authors constructed a simple model of paddling, which seems to support the theory that insect wings evolved in water.
Isabelle Dicaire

Experimental space telescopes to be 3D-printed at NASA - Laser Focus World - 0 views

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    From the article: By the end of September 2014, Jason Budinoff, an aerospace engineer at NASA's Goddard Space Flight Center (Greenbelt, MD), is expected to complete the first imaging telescopes ever assembled almost exclusively from 3D-manufactured components. The devices' optics and electronics will be fabricated using conventional methods. "As far as I know, we are the first to attempt to build an entire instrument with 3D printing," says Budinoff. He is building a fully functional 50 mm camera whose outer tube, baffles, and optical mounts are all printed as a single structure. The instrument is appropriately sized for a CubeSat (a small satellite made of individual units each about 100 mm on a side). 
zoervleis

A Roadmap to Interstellar Flight - 1 views

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    So we need lasers. Big lasers. :)
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    anybody want's to have a closer look at this?
Marcus Maertens

LightSail 2 Spacecraft Successfully Demonstrates Flight by Light | The Planetary Society - 2 views

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    Crowd-funded LightSail is sailing in space!
johannessimon81

Elon Musk about cost of space flight and going to Mars (privately) - 2 views

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    interesting stuff ... I like this quote "When a man tells you about the time he planned to put a vegetable garden on Mars, you worry about his mental state. But if that same man has since launched multiple rockets that are actually capable of reaching Mars-sending them into orbit, Bond-style, from a tiny island in the Pacific-you need to find another diagnosis. That's the thing about extreme entrepreneurialism: There's a fine line between madness and genius, and you need a little bit of both to really change the world. All entrepreneurs have an aptitude for risk, but more important than that is their capacity for self-delusion. Indeed, psychological investigations have found that entrepreneurs aren't more risk-tolerant than non-entrepreneurs. They just have an extraordinary ability to believe in their own visions, so much so that they think what they're embarking on isn't really that risky. They're wrong, of course, but without the ability to be so wrong-to willfully ignore all those naysayers and all that evidence to the contrary-no one would possess the necessary audacity to start something radically new."
LeopoldS

UCR Today: Flight Patterns Reveal How Mosquitoes Find Hosts to Transmit Deadly Diseases - 0 views

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    since fighting them desperately here in Jerusalem ... and relevant to our ariadna study (even if a bit late - Luke?)
jaihobah

Antimatter Starship Scheme Coming to Kickstarter - 1 views

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    "Hbar Technologies plans a Kickstarter effort to raise US $200,000 for the next phase design of an antimatter-propelled spaceship. The two scientists behind this design effort are a veteran Fermilab particle accelerator scientist and a former Los Alamos National Laboratory physicist and founding director of the U.S. Center for Space Nuclear Research. They originally developed it for NASA at the turn of the millennium."
fichbio

Long-Term Space Flight Simulation Reveals Infradian Rhythmicity in Human Na + Balance - 3 views

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    For the first time scientists have identified monthly hormonal cycles in human males
LeopoldS

Aerofex - Engineering Development & Prototyping - 1 views

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    Luke Skywalker?
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