MIT scientists identify a plasma plume that naturally protects the earth against solar storms.
The Earth’s magnetic field, or magnetosphere, stretches from the planet’s core out into space, where it meets the solar wind, a stream of charged particles emitted by the Sun. For the most part, the magnetosphere acts as a shield to protect the Earth from this high-energy solar activity.
But when this field comes into contact with the Sun’s magnetic field — a process called “magnetic reconnection” — powerful electrical currents from the Sun can stream into Earth’s atmosphere, whipping up geomagnetic storms and space weather phenomena that can affect high-altitude aircraft, as well as astronauts on the International Space Station.
Now scientists at MIT and NASA have identified a process in the Earth’s magnetosphere that reinforces its shielding effect, keeping incoming solar energy at bay.
Astronomers at the University of Michigan have, for the first time, directly measured the spin of a distant supermassive black hole.
Scientists have developed first global geologic map of Ganymede, which is the largest moon in the solar system. Read more…
Astronomers have reported the discovery of one of the most distant galaxies, dubbed Abell2744 Y1.
Astronomy and Astrophysics Letters
NASA spacecraft revolving around and studying Mars have found the strongest indications of water flows on Mars while studying seasonal features.
Geophysical Research Letters