Rosettas goal is to unravel the origins of the Solar System
Comet Wirtanen as seen by the VLT
Chase a fast-moving comet, land on it and ’ride’ it while it speeds up towards the Sun: not the script of a science-fiction movie, but the very real task of ESA’s Rosetta spacecraft.
New observations with the European Southern Observatory’s (ESO) Very Large Telescope (VLT) provide vital information about Comet Wirtanen - Rosetta’s target - to help ESA reduce uncertainties in the mission, one of the most difficult ever to be performed.
Every 5.5 years Comet Wirtanen completes an orbit around the Sun. Wirtanen has been seen during almost all its apparitions ever since its discovery in 1948, but only recently have astronomers obtained detailed observations that have allowed them to estimate the comet’s size and behaviour. The most recent of these observations was performed in December 2001 with the Very Large Telescope (VLT), located at the Paranal Observatory (Chile). As a result of these observations ESA will be able to refine plans for its Rosetta mission.
Franco Bonacina | ESA
Abrupt motion sharpens x-ray pulses
28.07.2017 | Max-Planck-Institut für Kernphysik
Physicists Design Ultrafocused Pulses
27.07.2017 | Universität Innsbruck
Spectrally narrow x-ray pulses may be “sharpened” by purely mechanical means. This sounds surprisingly, but a team of theoretical and experimental physicists developed and realized such a method. It is based on fast motions, precisely synchronized with the pulses, of a target interacting with the x-ray light. Thereby, photons are redistributed within the x-ray pulse to the desired spectral region.
A team of theoretical physicists from the MPI for Nuclear Physics (MPIK) in Heidelberg has developed a novel method to intensify the spectrally broad x-ray...
Physicists working with researcher Oriol Romero-Isart devised a new simple scheme to theoretically generate arbitrarily short and focused electromagnetic fields. This new tool could be used for precise sensing and in microscopy.
Microwaves, heat radiation, light and X-radiation are examples for electromagnetic waves. Many applications require to focus the electromagnetic fields to...
Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers
Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects
A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...
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