Military weather spy satellite apparently exploded in orbit

Dear readers and followers,

A 20-year-old military weather satellite apparently exploded in orbit February. 3rd 2015 following what the U.S. Air Force described as a sudden temperature spike. The “catastrophic event” produced 43 pieces of space debris, according to Air Force Space Command, which disclosed the loss of the satellite on February 27th 2015. 

Credit image: US air force

The satellite, Defense Meteorological Satellite Program Flight 13, was the oldest continuously operational satellite in the DMSP weather constellation. Launched in 1995, DMSP-F13 provided thousands of hours of weather imagery to Air Force and Navy forecasters before transitioning to a backup role in 2006. The Air Force said its sudden loss would have minimal impact. DMSP-F13 flew in a 800 kilometers sun-synchronous polar orbit popular for weather and spy satellites.

“Because this satellite was no longer used by the National Weather Service or the Air Force Weather Agency, the impact of the loss of this satellite is minimal,” the Air Force said. “We anticipate real-time weather data for tactical users will be slightly reduced without this satellite, but its data was not being used for weather forecast modeling.”

The Air Force still has six DMSP satellites in service following the launch last April of DMSP-F19. A seventh satellite, DMSP-F20, was under consideration for a 2016 launch as recently as November.

Air Force Space Command said DMSP-F13’s power subsystem experienced “a sudden spike in temperature” followed by “an unrecoverable loss of attitude control.” As DMSP operators were deciding to “render the vehicle safe” the Joint Space Operations Center at Vandenberg Air Force Base, California, identified a debris field near the satellite. The Air Force said it is continuing to track the debris and will issue conjunction warnings if necessary.

“While the initial response is complete, JSpOC personnel will continue to assess this event to learn more about what happened and what it will mean for users within this orbit,” said Air Force Col. John Giles, the Joint Space Operations Center’s director.

The first public indication of a problem with DMSP-F13 came from T.S. Kelso, a senior research astrodynamicist for Analytical Graphics’ Center for Space Standards and Innovation in Colorado Springs, Colorado, who noted Feb. 25 that there had been “another debris event with 26 new pieces” in addition to five previously cataloged DMSP-F13 objects.

Source: Space news

Remember that this blog is free, but you can support us with Flattr

Stay tuned

Cubsats inadvertently released from ISS

Dear readers and followers,

few days ago, September 4th, two more of Planet Lab’s shoebox-sized Earth imaging satellites launched them selves from aboard the International Space Station (ISS), the latest in a series of technical mysteries involving a commercially owned CubeSat deployer located outside Japan’s Kibo laboratory module.

Credit image: NASA

Station commander Steve Swanson was storing some blood samples in one of the station’s freezers Friday morning when he noticed that the doors on NanoRack’s cubesat deployer were open, announced +NASA . Flight controllers at the Johnson Space Center in Houston determined that two CubeSats had been inadvertently released. “No crew members or ground controllers saw the deployment. They reviewed all the camera footage and there was no views of it there either,” said NASA mission commentator Pat Ryan..

The satellites, owned by San Francisco-based Planet Labs, are part of a planned 100-member network designed to collect images of the entire Earth every 24 hours. So far, 12 of 32 CubeSats delivered to the space station aboard a Cygnus cargo ship in July have been deployed, including four launched inadvertently, said NanoRacks spokeswoman Abby Dickes. In addition to the two Planet Labs satellites launched Thursday night, two more of the company’s satellites were released accidentally August 23th, a NASA status report shows.

Credit image: NASA

The latest inadvertent deployment followed unsuccessful attempts Wednesday night to return NanoRack’s CubeSat dispenser to service. Troubleshooting efforts included Jiggling, the small robotic arm holding the dispense in an attempt to get its doors to open, Ryan added.

Flight control teams are assessing whether to bring the deployer back inside the station or to try to release the remaining CubeSats still awaiting launch.

Think that this blog is free, but you can support us with Flattr

Stay tuned

Satellite executive suddenly out at Google and move to SpaceX

Dear readers and followers,

Google's efforts to build a network of satellites to provide Internet service to the billions of people around the world took a hit on Wednesday after reports that one of the program leads had abruptly left the company.

Credit image: AFP

Web companies such as Google and Facebook from the Silicon Valley ramp up efforts to connect the world to their services, they are increasingly looking to the skies and higher. Few months ago, Google hired Brian Holz, who was chief technology officer at O3b Networks, which has launched special satellites to try to broadcast signals that would power new Internet service in developing countries around the world. Google had previously made a financial investment in O3b and one of its employees sits on O3b’s board. The startup’s recently-launched satellites faced technical setbacks this year. Moreover, Google also recently hired Dave Bettinger, who had spent 18 years at satellite firm VT iDirect, which supplies high speed broadband and other communications to military services and the oil and gas industry, according to people at Google. VT iDirect also suffered some product delays recently.

Reports emerged in early June that Google had partnered with O3b Networks as a part of Project Loon, a project to launch low-orbit, Internet-enabled satellites. Wyler joined Google to help with the project and reported directly to chief executive Larry Page.

Google Satellite executive Greg Wyler has left Google and has reportedly been seen frequenting the SpaceX office, according to The Wall Street Journal. Neither Wyler nor the two companies have commented on his abrupt departure, which comes just months after he was hired to assist in Google's attempt at creating a global internet service. 

Although he is reportedly working in close proximity with billionaire Elon Musk, The Wall Street Journal cites sources as stating that the satellite communications expert is not a SpaceX employee. His departure also coincides with Google's loss of rights to a certain radio spectrum, which is controlled by Wyler's company WorldVu Satellites Ltd. "This could hurt Google's aspirations in this area in the short term," Mile Marker 101 CEO Neil Mackey tells The Wall Street Journal.

Earlier this year, it was reported that Wyler would be helming a Google project that would put 180 satellites in orbit as part of its bid to provide worldwide internet access.

Source

Think that this blog is free, but you can support us with Flattr

Stay tuned

NASA publishes 3D-printable models of asteroids and satellites

Dear readers and followers,

Do you have a favorite NASA satellite? There's a small chance that you can now make a tiny figurine out if it using a 3D printer, as NASA has transformed a number of spacecrafts, asteroids, and features of Mars and the Moon into 3D-printable models. NASA has actually provided free 3D models for years now, but it appears that just recently it updated its modeling site with 22 files designed for 3D printing. The printable models have all been scaled down to a size that can actually fit inside a printer, so each one should measure no more than  10 centimeters long at its widest point.

Gale crate: Credit image: NASA

The available models include the spacecrafts Cassini, Kepler, and Voyager, parts of Mars including the Gale Crater and Valles Marineris canyons, and parts of the Moon including scans of its near and far side. Even if you don't own a 3D printer, the models come from NASA, so you should be able to send a favorite off to a printing service to have it made. 

Cassini spacecraft: Credit image: NASA

That said, NASA doesn't make it sound as though these models are necessarily perfect for printing just yet, and it's looking for comments on whether any of its currently published models need to have adjustments made to them for a successful print.

Contact me if you have any specific questions or to correct some typo error in the articles. 

You can support us with Flattr

Stay tuned

Source

Gecko sex satellite back online as Russia restores contact

Dear readers and followers,

Russia’s space agency has re-established communication with its Foton-M4 satellite in Earth’s low orbit, three days after losing contact. The robotic spacecraft contains geckos participating in experiments on how space conditions impact reproduction. Foton-M4 will be following its current orbit until Monday, while scientists discuss whether their experiments require the original trajectory, which is further from Earth, and engineers try to analyze what may have led to the communication failure. The two main versions considered by Roscosmos are mechanical damage through contact with space debris, and an internal fault in the equipment.

“We have conducted several communication sessions, and the link is stable,” said Roscosmos chief Oleg Ostapenko. 

Credit image: Oleg Voloshin

The satellite, the latest in a series that commenced in 2002, is meant to return to Earth in a controlled manner two months after its launch with Soyuz from Baikonur cosmodrome exactly a week ago. 

Credit image: Roscosmos

If, upon its return, it is discovered that the Foton-M4 was damaged by space debris, it will raise concern at the increasing pollution of the atmosphere. There are an estimated 22,000 man-made objects 10 centimeters or larger in orbit – big enough to penetrate the outer covering of the International Space Station ISS.

Contact me if you have any specific questions or to correct some typo error in the articles. 

You can support us with Flattr

Stay tuned

Source

Successful lift-off from Cape Canaveral of Atlas 5 carrying TDRS-L satellite

Dear followers,

Last night, the rocket ATLAS V 401 with its payload TDRS-L performed its lift-off from the launch pad Station Launch Complex 41 at Cape Canaveral, Florida at 9:33pm EDT (2:33 GMT 24th).

Enjoy the video of the space launch :

Credit: +NASA 

The payload of the rocket is the TDRS-L (Tracking and Data Relay Satellites) satellite of the third generation. The TDRS satellites are operated by +NASA , and are used for communication between NASA facilities and spacecraft including the Space Shuttle, Hubble Space Telescope, and International Space Station.

TDRS-L mission launched today

Dear followers,

Today, the rocket ATLAS V 401 with its payload TDRS-L will lift-off from the launch pad Station Launch Complex 41 at Cape Canaveral, Florida. The space launcher will be launched on an easterly trajectory and the spacecraft will be released into a highly elliptical geosynchronous transfer orbit. The mission from launch to vehicle separation is scheduled to take just over 1 hour 45 minutes.

Credit image : America space

The payload of the rocket is the TDRS-L (Tracking and Data Relay Satellites) satellite of the third generation. The TDRS satellites are operated by +NASA , and are used for communication between NASA facilities and spacecraft including the Space Shuttle, Hubble Space Telescope, and International Space Station.

The launch window is planned today between 9:05pm - 9:45pm EDT (2:05 - 2:45 GMT 24th)

HTTP://COUNTINGDOWNTO.COM

Stay tuned for its launch