A lot of attention has been paid in recent years to the asteroid threat issue. The International Asteroid Patrol has been set up to monitor the flight of potentially dangerous celestial rocks in visual diapason. However, the accuracy of optical methods for determining the trajectory leaves much to be desired. That accounts for inaccuracy of numerous forecasts predicting the date when the space "killer" is to collide with the Earth.
The scientists of the Radio-Astronomical Institute (National Academy of Sciences of Ukraine) have suggested that RT-70 radio-telescope (located in the town of Yevpatoria) should be used to determine and refine the coordinates of selected asteroids. The radio-telescope is equipped with a special guidance system which permits to point the telescope at any spot in the sky. The specificity of RT-70 is its ability to perform two functions: to send radio signals into space and to receive them. There are only two of such universal telescopes in the world.
The Kharkov radio-astronomers have carried out the first radio-location session. The RT-70 telescope antenna radiated radio-frequency pulses in the direction of 1998 WT 24 asteroid, and the echo pulse was synchronously received by Russian and foreign radio-astronomers at several antennas simultaneously. Application of the radio-interferometry method, i.e. coordinated effort of several radio-telescopes located at a distance from each other, allowed to determine the celestial body coordinates at that point with the highest possible precision, and, consequently, to calculate its trajectory. A successful experiment of this type, which took place for the first time in the world, proved that the radio-location method could discover an asteroid, calculate peculiarities of its orbit and surface when it was at a large distance from the Earth.
Valentina Gatash | alfa
Nanotechnology for energy materials: Electrodes like leaf veins
27.09.2016 | Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
First quantum photonic circuit with electrically driven light source
27.09.2016 | Westfälische Wilhelms-Universität Münster
Friction stir welding is a still-young and thus often unfamiliar pressure welding process for joining flat components and semi-finished components made of light metals.
Scientists at the University of Stuttgart have now developed two new process variants that will considerably expand the areas of application for friction stir welding.
Technologie-Lizenz-Büro (TLB) GmbH supports the University of Stuttgart in patenting and marketing its innovations.
Friction stir welding is a still-young and thus often unfamiliar pressure welding process for joining flat components and semi-finished components made of...
Optical quantum computers can revolutionize computer technology. A team of researchers led by scientists from Münster University and KIT now succeeded in putting a quantum optical experimental set-up onto a chip. In doing so, they have met one of the requirements for making it possible to use photonic circuits for optical quantum computers.
Optical quantum computers are what people are pinning their hopes on for tomorrow’s computer technology – whether for tap-proof data encryption, ultrafast...
The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP has been developing various applications for OLED microdisplays based on organic semiconductors. By integrating the capabilities of an image sensor directly into the microdisplay, eye movements can be recorded by the smart glasses and utilized for guidance and control functions, as one example. The new design will be debuted at Augmented World Expo Europe (AWE) in Berlin at Booth B25, October 18th – 19th.
“Augmented-reality” and “wearables” have become terms we encounter almost daily. Both can make daily life a little simpler and provide valuable assistance for...
With the help of artificial intelligence, chemists from the University of Basel in Switzerland have computed the characteristics of about two million crystals made up of four chemical elements. The researchers were able to identify 90 previously unknown thermodynamically stable crystals that can be regarded as new materials. They report on their findings in the scientific journal Physical Review Letters.
Elpasolite is a glassy, transparent, shiny and soft mineral with a cubic crystal structure. First discovered in El Paso County (Colorado, USA), it can also be...
For the first time, Fraunhofer IKTS shows additively manufactured hardmetal tools at WorldPM 2016 in Hamburg. Mechanical, chemical as well as a high heat resistance and extreme hardness are required from tools that are used in mechanical and automotive engineering or in plastics and building materials industry. Researchers at the Fraunhofer Institute for Ceramic Technologies and Systems IKTS in Dresden managed the production of complex hardmetal tools via 3D printing in a quality that are in no way inferior to conventionally produced high-performance tools.
Fraunhofer IKTS counts decades of proven expertise in the development of hardmetals. To date, reliable cutting, drilling, pressing and stamping tools made of...
28.09.2016 | Event News
27.09.2016 | Event News
23.09.2016 | Event News
28.09.2016 | Medical Engineering
28.09.2016 | Materials Sciences
28.09.2016 | Business and Finance