An efficient method to measure residual stress in 3D printed parts
Livermore CA (SPX) Nov 17, 2014 -
Lawrence Livermore National Laboratory researchers have developed an efficient method to measure residual stress in metal parts produced by powder-bed fusion additive manufacturing.
This 3D printing process produces metal parts layer by layer using a high-energy laser beam to fuse metal powder particles. When each layer is complete, the build platform moves downward by the thickness of one ...
more
Field-emission plug-and-play solution for microwave electron guns
Washington DC (SPX) Nov 19, 2014 -
On a quest to design an alternative to the two complex approaches currently used to produce electrons within microwave electron guns, a team of researchers from Euclid TechLabs and Argonne National Laboratory's Center for Nanoscale Materials have demonstrated a plug-and-play solution capable of operating in this high-electric-field environment with a high-quality electron beam.
Unfamiliar ...
more
Eutelsat and Spacecom Create Unified Neighbourhood
Nicosia, Cyprus (SPX) Nov 20, 2014 -
Eutelsat Communications and Spacecom have announced the signature of a partnership agreement that will drive expansion of digital entertainment services at one of Africa's fastest-growing video neighbourhoods.
The two companies have established a framework for cross-commercialisation of Ku-band capacity connected to the high-power African service areas of Eutelsat's EUTELSAT 16A satellite ...
more
Mutualink and C2UK Partner to Deliver Interoperable Comms
Wallingford CT (SPX) Nov 20, 2014 -
C2UK and Mutualink have announced a partnership to jointly develop the UK and Middle East markets for the Mutualink product portfolio. Mutualink offers state-of-the-art, secure, interoperable communications and information sharing solutions for U.S. and coalition defence partners, including all aspects of military and homeland defence.
C2UK is able to leverage both its domestic and interna ...
more
Schker-blop! The sound of a comet touchdown
Paris (AFP) Nov 20, 2014 -
No trumpet sounded to mark the historic event - instead, it was a hollow, springy plop which heralded last week's landing by the comet probe Philae.
Scientists at the German space agency DLR on Thursday said they had recorded vibrations from sensors on Philae's three legs as the robot lab touched down on Comet 67P/Churyumov-Gerasimenko.
There is no sound in space, so the team transcribe ...
more
Astronauts to get 'ISSpresso' coffee machine
Paris (AFP) Nov 20, 2014 -
Ristretto or lungo? Not a question astronauts on the International Space Station normally have to contemplate, but that is about to change thanks to a new zero-gravity coffee machine being delivered this weekend.
The ISSpresso machine is set to boldly go to the orbital station this weekend, carried there by Italian astronaut Samantha Cristoforetti.
Astronauts on the station will finally ...
more
New model clarifies photoexcited thin-film lattice dynamics
Washington DC (SPX) Nov 19, 2014 -
A research team from Germany developed an analytical model to describe the structural dynamics of photoexcited thin films and verified it by ultrafast X-ray diffraction. Lattice dynamics, atomic movements in a crystal structure, can influence the physical and chemical properties of a material.
The phenomenon can be directly studied using ultrafast X-ray diffraction, in which femtosecond X- ...
more
A new approach to the delivery of satellites to orbit
Barcelona, Spain (SPX) Nov 20, 2014 -
Celestia Aerospace starts operations in Barcelona for the development and launch of low weight satellites with an innovative approach. Its primary goal is to offer turnkey solutions, which encompass all the stages of development and operation of a satellite, a first for the small dimension satellite industry worldwide. A unique integral low-cost service never seen before in the aerospace industr ...
more
Physicists suggest new way to detect dark matter
Odense, Denmark (SPX) Nov 20, 2014 -
For years physicists have been looking for the universe's elusive dark matter, but so far no one has seen any trace of it. Maybe we are looking in the wrong place? Now physicists from University of Southern Denmark propose a new technique to detect dark matter.
The universe consists of atoms and particles - and a whole lot more that still needs to be detected. We can only speculate about t ...
more
Gravity may have saved the universe after the Big Bang
London, UK (SPX) Nov 20, 2014 -
New research by a team of European physicists could explain why the universe did not collapse immediately after the Big Bang. Studies of the Higgs particle - discovered at CERN in 2012 and responsible for giving mass to all particles - have suggested that the production of Higgs particles during the accelerating expansion of the very early universe (inflation) should have led to instability and ...
more
Second Time Through, Mars Rover Examines Chosen Rocks
Pasadena CA (JPL) Nov 20, 2014 -
NASA's Curiosity Mars rover has completed a reconnaissance "walkabout" of the first outcrop it reached at the base of the mission's destination mountain and has begun a second pass examining selected rocks in the outcrop in more detail.
Exposed layers on the lower portion of Mount Sharp are expected to hold evidence about dramatic changes in the environmental evolution of Mars. That was a ...
more
Did Philae Drill The Comet?
Paris (ESA) Nov 20, 2014 -
Philae's Sampling, Drilling and Distribution (SD2) subsystem was activated towards the end of the surface operations that Philae performed on Comet 67P/Churyumov-Gerasimenko last week, despite fears that it might alter the lander's precarious position following its third touchdown. Here we present the latest update from the SD2 team.
SD2's goal was to drill into the comet surface in order ...
more
Cosmodrome construction falls behind schedule
Moscow (XNA) Nov 20, 2014 -
Russian Prime Minister Dmitry Medvedev on Monday blame government officials for slow progress in the construction of the new Vostochny space center in the Far Eastern Amur region.
"Implementation of the space center falls behind the schedule," Medvedev said during a meeting with deputy ministers, adding that problems in the construction process would be discussed soon with the leadership o ...
more
Swift Probes Exotic Object: Black Hole or Mega Star?
Greenbelt MD (SPX) Nov 20, 2014 -
An international team of researchers analyzing decades of observations from many facilities, including NASA's Swift satellite, has discovered an unusual source of light in a galaxy some 90 million light-years away.
The object's curious properties make it a good match for a supermassive black hole ejected from its home galaxy after merging with another giant black hole. But astronomers can' ...
more
China launches Yaogan-24 remote sensing satellite
Jiuquan, China (XNA) Nov 21, 2014 -
China sent the Yaogan-24 remote sensing satellite into a scheduled orbit at 3:12 p.m. on Thursday from the Jiuquan satellite launch center.
Yaogan satellites will mainly be used for scientific experiments, natural resource surveys, crop yield estimates and disaster relief.
The Yaogan-24 was carried by a Long March-2D rocket, the 199th mission for the Long March rocket family.
C ...
more
Researchers Advance 'Quantum Teleportation'
Pasadena CA (JPL) Nov 21, 2014 -
The world at the quantum level, at the scale of particles too small for the eye to see, is very strange. It's possible, for instance, to have two particles that are "entangled" - that is, they function as if they were connected, even if they are many miles away from each other.
New research co-authored by Francesco Marsili, microdevices engineer at NASA's Jet Propulsion Laboratory, Pasade ...
more
NASA Selects Student Teams for High-Powered Rocket Challenge
Washington DC (SPX) Nov 21, 2014 -
NASA has selected eight teams from middle and high schools across the country to participate in the 2014-2015 NASA Student Launch Challenge, April 7-12, organized by NASA's Marshall Space Flight Center in Huntsville, Alabama.
The Student Launch Challenge engages students in a research-based, experiential exploration activity. Teams participating in the challenge must design, build and laun ...
more
Rosetta continues into its full science phase
Paris (ESA) Nov 20, 2014 -
With the Philae lander's mission complete, Rosetta will now continue its own extraordinary exploration, orbiting Comet 67P/Churymov-Gerasimenko during the coming year as the enigmatic body arcs ever closer to our Sun. Last week, ESA's Rosetta spacecraft delivered its Philae lander to the surface of the comet for a dramatic touchdown.
The lander's planned mission ended after about 64 hours ...
more
Russia studies construction of its own orbital station
Moscow (XNA) Nov 20, 2014 -
Russia's federal space agency Roscosmos is studying several options of creating a brand-new Russian orbital station, which could replace the International Space Station (ISS), deputy chief of Roscosmos Denis Lyskov said Monday.
"We are looking into various options, while building an orbital station as a substitute for ISS is one of them," Lyskov said without giving any further details.
...
more
