After more than 15 years, the German-US Gravity Recovery and Climate Experiment (GRACE) for precise measuring of Earth's gravity field has come to an end. Since its launch from the Russian cosmodrome in Plesetsk on 17 March 2002 on board a Rockot launcher, the twin satellites GRACE-1 and GRACE-2 have been orbiting Earth in close formation flight, precisely recording how Earth's gravity field changes over time.
Seafaring vessels use satellites to determine their precise position to within a few metres. It is particularly important that exact positional information is constantly available in coastal waters and ports or near offshore wind farms and oil platforms.
The BEXUS 24 research balloon was launched from the Esrange Space Center in Sweden at 13:39 Central European Summer Time on Wednesday 18 October 2017. The balloon reached its maximum altitude of 24.6 kilometres at 15:25 at which point the gondola separated from the balloon (in a procedure called 'cut down'). The gondola landed back on Earth at 17:22 local time.
In which quantity are trace gases, such as nitrogen dioxide, ozone, formaldehyde, sulphur dioxide, methane and carbon monoxide, present in our atmosphere? How high are the global and regional concentrations of aerosol particles? Which processes induce changes in our environment, and how do they affect our climate, air quality, and therefore our health?
The German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) will be showcasing its latest research at this year's International Astronautical Congress (IAC) in Adelaide, Australia.
On 25 August 2017, the Italian ESA astronaut Paolo Nespoli, currently residing on the International Space Station (ISS), remote-controlled the German Aerospace Center (DLR) Rollin’ Justin robot. During the experiment, a tablet-PC was used to send instructions to the robot at the DLR Institute of Robotics and Mechatronics in Oberpfaffenhofen from the ISS. Justin was then left to his own devices in the completion of various tasks and was required to use artificial intelligence to decide how individual work stages needed to be completed. These tasks belong to the SUPVIS Justin experiment, which is being carried out as part of the METERON project (Multi-Purpose End-to-End Robotic Operation Network) in cooperation with the European Space Agency (ESA).
It is one of the big unknowns in climate research. The aerosol cloud that sits above the Asian summer monsoon consists of small droplets and dust particles that reach an altitude of up to 17 kilometres and have an effect on the climate.
The calibration of radar satellites is a key research area at the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR). "In the last few years, we have earned the undisputed status of an international calibration centre for radar satellites," says Alberto Moreira, Director of the DLR Microwaves and Radar Institute.
The German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR), in tandem with project leader Airbus Defence and Space, has successfully flight tested a new aircraft as part of the development of future production-ready drones (UAVs, unmanned aerial vehicles).
Emissions from major cities can spread beyond the limits of these urban areas under certain weather conditions. When this happens, the wind often carries particles and gaseous pollutants over 1000 kilometres.