On May 30 from 8-10 p.m. EDT, join Dr. Bill Cooke of the Marshall Space Flight Center Meteoroid Environment Office as he takes your questions about QE2 via live Web chat.
Asteroid 1998 QE2 was discovered on Aug 19, 1998, by the Massachusetts Institute of Technology Lincoln Near Earth Asteroid Research (LINEAR) program near Socorro, N.M. While the asteroid is believed to be about 1.7 miles (2.7 kilometers) in size, or nine Queen Elizabeth 2 ship-lengths in size, it poses no threat to Earth.
Tuesday, 28 May 2013
Friday, 24 May 2013
OPPORTUNITIES: Call for young journalists to cover “Croatia in the EU” – strengthening ties in youth cooperation
Monday, 20 May 2013
Who are we? Orange Magazine provides journalistic education and supports young journalists by giving them room to explore media and current affairs.
Where? Zagreb, Croatia
When? 24-26 June, 2013
Costs? Travel arrangements will be made by our partner Grayling. Accommodation for two nights and breakfast are covered.
Submission deadline: Saturday May 25, 2013, 23h59 CET
Selected participants notified by: Tuesday May 28, 2013
Thursday, 16 May 2013
We attempted to return to reaction wheel control as the spacecraft rotated into communication, and commanded a stop rotation. Initially, it appeared that all three wheels responded and that rotation had been successfully stopped, but reaction wheel 4 remained at full torque while the spin rate dropped to zero. This is a clear indication that there has been an internal failure within the reaction wheel, likely a structural failure of the wheel bearing. The spacecraft was then transitioned back to Thruster-Controlled Safe Mode.
An Anomaly Review Board concurred that the data appear to unambiguously indicate a wheel 4 failure, and that the team’s priority is to complete preparations to enter Point Rest State. Point Rest State is a loosely-pointed, thruster-controlled state that minimizes fuels usage while providing a continuous X-band communication downlink. The software to execute that state was loaded to the spacecraft last week, and last night the team completed the upload of the parameters the software will use.
The spacecraft is stable and safe, if still burning fuel. Our fuel budget is sufficient that we can take due caution while we finish our planning. In its current mode, our fuel will last for several months. Point Rest State would extend that period to years.
We have requested and received additional NASA Deep Space Network communication coverage, and this morning the Anomaly Review Board approved the transition to Point Rest State later today. Because this is a new operating mode of the spacecraft, the team will closely monitor the spacecraft, but no other immediate actions are planned. We will take the next several days and weeks to assess our options and develop new command products. These options are likely to include steps to attempt to recover wheel functionality and to investigate the utility of a hybrid mode, using both wheels and thrusters.
With the failure of a second reaction wheel, it's unlikely that the spacecraft will be able to return to the high pointing accuracy that enables its high-precision photometry. However, no decision has been made to end data collection.
Kepler had successfully completed its primary three-and-a-half year mission and entered an extended mission phase in November 2012.
Even if data collection were to end, the mission has substantial quantities of data on the ground yet to be fully analyzed, and the string of scientific discoveries is expected to continue for years to come.
Updates will be provided as information is available.
WATCHwords Online", click http://www.prixjeunesse.de/newsletter
The latest issue contains reports on recent PRIX JEUNESSE Suitcase
Workshops in Afghanistan, Palestine, Hong Kong and much more.
UNICEF Georgia will soon publish a report that takes stock of the general public's knowledge, attitude, behaviors and practices around the issue of violence against children. The study is quantitative and contains data gathered in more than 3,000 households randomly selected across the country.
The teenagers at the workshop will develop their own stories and the finished product, a series of 20 OneMinutesJr videos, will add a very important personal and visual component to the quantitative study.
Tuesday, 14 May 2013
Spacecraft "Double Dee 3» (Eutelsat W3D) launched into orbit
The launch window opens at 5:38 p.m. EDT and will remain open for 18 minutes to accommodate any delays for weather or technical reasons. The satellite, designated as Space Vehicle Number (SVN) 66, is the fourth in the series of 12 IIF space vehicles that Boeing has on contract with the Air Force. SVN-66 will be joining the other operational satellites currently on-orbit in the GPS constellation.
"We are looking forward to yet another successful launch; tremendous progress is being made with the GPS IIF space vehicles. The first three satellites are on-orbit and meeting all mission requirements and the atomic clocks on-board the payloads are providing the best accuracy ever," said Col. Bernie Gruber, director of the Space and Missile Systems Center's Global Positioning Systems Directorate.
"This is just the beginning of the modernization plan to improve operations, sustainment and overall GPS service for military and civil users around the globe. I would like to commend the 45th and the 50th Space Wings, United Launch Alliance, our industry partners, the Atlas V and GPS IIF launch teams. Thanks to the hard work and focus on mission success, we are ready tolaunch the fourth GPS IIF satellite," he said. "To mission success!"
The new capabilities of the IIF satellites will provide greater navigational accuracy through improvements in atomic clock technology; an increased design life of 12 years for long-term service; and a new third civil signal (L5) to provide a more robust signal for commercial aviation and safety-of-life applications, while the second civil signal (L2C) is available for dual-frequency equipment.
GPS will deliver sustained, reliable and improved military and civil navigation capabilities to ensure GPS remains the "Center of Excellence forspaced-based navigation."
Monday, 13 May 2013
Up to three crewmembers can return to Earth from the International Space Station aboard a Soyuz TMA spacecraft. The vehicle lands on the flat steppes of Kazakhstan in central Asia. A Soyuz trip to the Station takes two days from launch to docking, but the return to Earth takes less than 3.5 hours.
Lightening the Load on the Way Down
The Soyuz TMA spacecraft is composed of three elements attached end-to-end -- the Orbital Module, the Descent Module and the Instrumentation/Propulsion Module. The crew occupies the central element, the Descent Module. The other two modules are jettisoned prior to re-entry. They burn up in the atmosphere, so only the Descent Module returns to Earth.
The Orbital Module provides the crew with extra living space during the two-day trip to the Station. It contains systems vital to rendezvous and docking with the Station's Pirs Docking Compartment or other port: a docking mechanism, a hatch and rendezvous antennas. Once the Soyuz departs, the Orbital Module is no longer needed, so it is jettisoned about three hours after undocking.
The Instrumentation/Propulsion Module is shed at the same time, about half an hour after its engines perform their final task -- a deorbit burn that drops the Soyuz from orbit. With it go the spacecraft's two solar arrays. This module contains the primary guidance, navigation and computer systems for the vehicle.
A secondary guidance, navigation and control system in the Descent Module enables the crew to maneuver the vehicle after the Instrumentation/Propulsion Module has been jettisoned. The Soyuz commander can pilot the module using a rotational hand controller that manages the firing of eight hydrogen peroxide thrusters on the vehicle's exterior. This system is deactivated 15 minutes before landing, when the parachutes are deployed.
Cushioning the Landing
Having shed two-thirds of its mass, the Soyuz reaches Entry Interface -- a point 400,000 feet above the Earth, where friction due to the thickening atmosphere begins to heat its outer surfaces -- three hours after undocking. With only 23 minutes left before it lands on the grassy plains of central Asia, attention in the module turns to slowing its rate of descent.
Eight minutes later, the spacecraft is streaking through the sky at a rate of 755 feet per second. Before it touches down, its speed will slow to only 5 feet per second, and it will land at an even lower speed than that. Several onboard features ensure that the vehicle and crew land safely and in relative comfort.
Four parachutes, deployed 15 minutes before landing, dramatically slow the vehicle's rate of descent. Two pilot parachutes are the first to be released, and a drogue chute attached to the second one follows immediately after. The drogue, measuring 24 square meters (258 square feet) in area, slows the rate of descent from 755 feet per second to 262 feet per second.
The main parachute is the last to emerge. It is the largest chute, with a surface area of 10,764 square feet. Its harnesses shift the vehicle's attitude to a 30-degree angle relative to the ground, dissipating heat, and then shift it again to a straight vertical descent prior to landing.
-- Landing engines
The main chute slows the Soyuz to a descent rate of only 24 feet per second, which is still too fast for a comfortable landing. One second before touchdown, two sets of three small engines on the bottom of the vehicle fire, slowing the vehicle to soften the landing.
Further cushioning the impact of landing are the crew seats with their custom-fitted liners. The liners are made preflight, individually molded to fit each person's body -- this ensures a tight, comfortable fit when the module lands on the Earth. When crewmembers are brought to the station aboard the Space Shuttle, their seat liners are delivered with them and transferred to the existing Soyuz spacecraft as part of crew handover activities.
TMA Improvements for Landing
The Soyuz TMA spacecraft is a replacement for the Soyuz TM, which was used from May 1986 to November 2002 to take astronauts and cosmonauts to Mir and then to the International Space Station beginning in November 2000.
The TMA increases safety, especially in descent and landing. Two new engines reduce landing speed and forces felt by crewmembers by 15 to 30 percent, and a new entry control system and three-axis accelerometer increase landing accuracy. Instrumentation improvements include a color "glass cockpit," which is easier to use and gives the crew more information, with hand controllers that can be secured under an instrument panel. All the new components in the Soyuz TMA can spend up to one year in space.
Descent module structural modifications, seats and seat shock absorbers were tested in hangar drop tests. Landing system modifications, including associated software upgrades, were tested in a series of airdrop tests. Additionally, extensive tests of systems and components were conducted on the ground.
Friday, 10 May 2013
Filming is currently under way in Beijing on Hoopla Doopla, a brand-new preschool series co-produced by ABC Children's Television in Australia and China's CCTV.
The 52x12-minute live-action comedy series is dialogue-free. It revolves around six characters who tumble, juggle, leap and somersault into and out of trouble. The cast and production team hail from both China and Australia, including a Chinese and Australian director. The series will be filmed over six months on a specially designed studio set and will air on ABC4Kids in 2014.Tim Brooke-Hunt, ABC's controller of children's TV, said: "We are delighted to extend our relationship with our friends at CCTV through this exciting new co-production."
The ABU, CASBAA and UNICEF are calling on Asia–Pacific broadcasters and producers to submit entries for the 2013 Child Rights Television Award.
The award is given each year to the best television programming on children's rights produced in the Asia–Pacific region. It recognizes the efforts of broadcasters in pursuing both the production of high quality children's programming and better coverage of children's issues.
The crew is not in danger, and the station continues to operate normally otherwise.
NEW YORK, May 8, 2013 (GLOBE NEWSWIRE) -- A group of 18 New York City public high school students will travel to Bosnia and Herzegovina to explore media and society in collaboration with Bosnian peers, June 26--July 19. The students participate in Global Kids (www.globalkids.org), an award-winning, non-profit educational organization that promotes global learning and youth development.
Amidst the cultural heritage of the capital Sarajevo, the group will meet local leaders, activists and artists. They will also see the progress that has been made in rebuilding the divided city of Mostar. The bulk of time will be spent in Sanski Most, living with families and engaging in dialogue and community projects alongside Bosnian peers.
Thursday, 9 May 2013
Today’s children grow up in a vastly different technological world than that of their parents or grandparents. While you may fondly recall a favorite storybook stored on your nightstand, many kids today are reading using their parent’s smartphone or tablet. Digital devices are becoming a regular part of a child’s life, and parents should understand what this means for how kids learn and grow.
How are these new devices different from traditional electronics? Unlike passively watching TV or a DVD, reading a book or playing a game on an electronic device is interactive, meaning children can actively explore a story or game through touch screens or voice commands. Interacting through technology can be an enjoyable way for kids to obtain new skills.