Solar Physicists at the Mullard Space Science Laboratory, University College London (MSSL-UCL) have discovered new clues to understanding explosions on the Sun.
Coronal mass ejections are violent explosions that can fling electrified gas [plasma] with a mass greater than Mount Everest towards the Earth with destructive consequences for satellites. They can originate from active regions on the Sun, long known to consist of forests of loops filled with plasma. These active loops are roughly 50,000 km in size. However, active regions on either side of the solar disk are frequently connected by giant loops, which can bridge the Sun’s equator. These loops have long been thought of as the gentle giants of the Sun, but in a paper to be published early this year in the journal of Astronomy and Astrophysics, the researchers describe the explosive characteristics of these giants.
An example of a giant loop can clearly be seen in figure one, where the width of the arrow represents the size of the Earth. These giant loops of plasma are 450,000 km long - large enough to engulf 40 Earths. If Concorde could fly along one of these loops, it would take nearly 9 days to complete the journey!
Julia Maddock | alfa
The moon is front and center during a total solar eclipse
24.07.2017 | NASA/Goddard Space Flight Center
Superluminous supernova marks the death of a star at cosmic high noon
24.07.2017 | Royal Astronomical Society
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...
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....
A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
24.07.2017 | Power and Electrical Engineering
24.07.2017 | Materials Sciences
24.07.2017 | Materials Sciences