Feeds

Did dicky power supply silence climate-change probe Envisat?

Or had the silent craft seen enough of our planet?

Top three mobile application threats

Pic The European Space Agency has all but given up hope of contacting its long-lived Envisat mission, a month after the satellite went silent.

Artist's impression of Envisat

Artist's impression of Envisat. Credit: ESA

Communication with the environment-watching craft suddenly halted on 8 April. Engineers tried to regain control by continuously firing commands from a wide network of ground stations - but Envisat never answered.

The agency says there were no signs of degradation with the satellite before it went AWOL, so they have been trying to figure out what could have gone wrong. It is possible the onboard power regulator snuffed it, which would knock out telemetry and communications electronics.

Another theory is that the satellite short-circuited, triggering its safe-mode to ensure its survival, but something went wrong on the path to safe mode, leaving Envisat in some unknown state.

Although the boffins will keep trying to call Envisat for the next two months, the chances of recovery are now extremely low.

Phytoplankton bloom captured by Envisat

Phytoplankton bloom captured by Envisat. Credit: ESA

The ESA had hoped that the satellite would last until the follow-on Sentinel missions came online, the first of which is due next year, but it still got its money's worth: Envisat had already been snapping shots of Earth for double its planned lifetime, ten years instead of five, and the agency estimates that 2,500 scientific publications have been based on its data so far.

The satellite was sent up to gather information on our planet's environment and has sent back enough numbers to keep both sides of the climate debate arguing for a while yet. It monitored global sea levels and temperatures, the Arctic sea ice, air pollution and holes in the ozone layer, as well as other environmental indicators.

As well as giving its pics to scientists, Envisat also provided data to folks dealing with natural and manmade disasters including floods, fires and oil spills. ®

High performance access to file storage

More from The Register

next story
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
LOHAN and the amazing technicolor spaceplane
Our Vulture 2 livery is wrapped, and it's les noix du mutt
KILLER ROBOTS, DNA TAMPERING and PEEPING CYBORGS: the future looks bright!
Americans optimistic about technology despite being afraid of EVERYTHING
R.I.P. LADEE: Probe smashes into lunar surface at 3,600mph
Swan dive signs off successful science mission
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
Liftoff! SpaceX Falcon 9 lifts Dragon on third resupply mission to ISS
SpaceX snaps smartly into one-second launch window
Elon Musk's LEAKY THRUSTER gas stalls Space Station supply run
Helium seeps from Falcon 9 first stage, delays new legs for NASA robonaut
prev story

Whitepapers

SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.