The German satellite radar twins - TanDEM-X and TerraSAR-X - are a year through their quest to make the most precise, seamless map of varying height on Earth.
They've now acquired data across the entire globe at least once. However, some tricky sampling areas, such as tall mountains and thick forests, will require several passes and so we don't expect to see a fully finished product before 2014.
It couldn't have been planned better. Just as the Nobel committee was announcing its physics award would go to the research that identified the "accelerating expansion of the Universe", delegates to the European Space Agency were sitting down in Paris to approve a mission to investigate "dark energy" - the very thing thought to be pushing the cosmos apart at a faster and faster rate.
Saul Perlmutter and Adam Riess of the US and Brian Schmidt of Australia will share the Nobel. The trio studied a particular type of stellar explosion, or supernova, and found that the most distant of these objects were receding quickest.
The British spacecraft manufacturer SSTL has announced its intention to start building radar satellites.
It is a significant move for the Guildford-based company which has, until now, been associated with small, low-cost satellites that view the Earth at optical and near-infrared wavelengths, producing images that are recognisably the sort of thing we see with our own eyes.
There was always the risk that when the US shuttles were retired, continued operations on the International Space Station (ISS) could be left more vulnerable should there be a failure on the Russian Soyuz rocket system.
Soyuz has become the sole means of getting people to the 400km-high outpost. If it can't fly, no-one can. It's the classic single-point failure with no back-up.
So much from so little. When Japanese scientists opened the sterile canister from their sample-return mission to Asteroid Itokawa, they dared to hope they would have something to analyse.
They did - more than a thousand rocky fragments, but none of them bigger than a couple of tenths of a millimetre across. But with today's powerful laboratory tools, this mini-haul proved just ample, and, in the current edition of Science magazine, the Hayabusa mission-scientists report their key findings.
Should we be surprised by the latest assessment of how much it will cost to build, launch and operate the James Webb Space Telescope (JWST)? Documents sent to the US Congress by Nasa indicate the final bill will now be $8.7bn.
But if you spend annually what the US space agency spends on this telescope project and you don't launch until 2018 - that's about what you come out with. Those close to the project have been saying this for some months, so the new assessment is not a shock disclosure.
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