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ESA

A generation ago, Astronomers thought of comets as simple things – huge dirty snowballs of rock and ice with a few organic chemicals thrown in. But after six months orbiting comet 67P/Churyumov–Gerasimenko, the unmanned Rosetta probe has shown them to be far more complex and active than previously thought. Read More
Key orbits frequented by GPS and communications satellites are becoming more and more hazardous, as man-made debris presents an increasingly palpable danger to the valuable assets orbiting at heights of around 2,000 km (1,243 miles) above the Earth. That' s why the European Space Agency (ESA) is hosting an international workshop geared towards cleaning up low-Earth orbit, with a focus on how to make the space industry more sustainable. Read More
Space maneuvers have often been described as an orbital ballet, but the European Space Agency's (ESA) Cluster II satellites are currently in a ballet where the dancers are moving blindfolded at hypersonic speeds as they pass within a cosmic hairsbreadth of one another. That's because two of the Cluster satellites are flying within "touching distance" of one another as scientists try to learn more about the effects of solar wind on the Earth's magnetic field. Read More
The European Space Agency has given the green light for the launch of its unmanned spaceplane, Intermediate eXperimental Vehicle (IXV). The original plan for a launch atop a Vega rocket from the ESA space center in French Guiana last November was put on hold due to safety concerns about its trajectory. With these issues now resolved, lift off is rescheduled for February 11. Read More

Early on Wednesday morning, US astronauts aboard the ISS were forced to evacuate the American section of the station as an alarm was triggered, warning the crew of a potential ammonia leak. Read More

It's been a busy year in space. In a mixture of triumph and tragedy, space exploration reached new horizons, tested new technologies, and pushed the limits of the possible in 2014. So as the old year draws to close, Gizmag looks back on the space highlights of the past twelve months. Read More
If there were any dinosaurs around, they could tell you that an asteroid impact can ruin your whole day. But if we did learn that one was actually going to strike the Earth in a month, what would the authorities do? To find out, the European Space Agency held its first ever mock asteroid drill to work on solutions and identify problems in how to handle such a catastrophe. Read More
A new crowdsourcing initiative is calling upon the public to help catalog the ever increasing library of images snapped of our planet, and more importantly its cities, at night from the International Space Station (ISS). With your help, the Cities at Night project could help map light pollution spanning the course of the 16 year period in which the images where taken, with the added bonus of giving volunteers the opportunity to flick through a catalog of stunning images that highlight the mark we make on our planet at night. Read More
The European Space Agency's (ESA) eight-year Venus Express mission has come to an end. Having already extended its lifespan to four times that originally planned, the unmanned orbiter has exhausted its fuel during a final attempt to further prolong its usefulness. According to ESA, the spacecraft can no longer hold the correct attitude to maintain communications with Earth and will soon burn up in the Venusian atmosphere. Read More
The European Space Agency’s CryoSat mission has returned its latest map of Arctic sea ice volumes, recording a slight decrease in thickness over previous measurements. The data flies in the face of the previous downward trend, which was much greater, but is unlikely to indicate a shift in the accepted pattern of degradation. Read More