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Flares can trigger geomagnetic storms when a coronal mass ejection travels through space and interacts with Earth’s magnetic field. The northern lights — light produced when particles from ...
The northern lights, seen here in Oregon in May, might be visible in parts of the U.S. on New Year's Eve. ... A CME explosion is caused by the sun’s magnetic field and, like in this case, can ...
The northern lights are caused by interactions between the sun's solar winds and the Earth's protective magnetic field, according to NOAA. Those two phenomenons result in geomagnetic storms and ...
An aurora [a] (pl. aurorae or auroras), [b] also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), [c] is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of brilliant lights that appear as curtains ...
The northern lights may be visible as far south as Alabama and Northern California on Thursday, following a powerful eruption from the sun. ... with the planet’s magnetic field, interacting with ...
A negative Dst index means that Earth's magnetic field is weakened. [15] This is particularly the case during solar storms, with a higher negative Dst index indicating a stronger solar storm. The 2003 Halloween solar storms had a peak Dst index of −383 nT, although a second storm on 20 November 2003 reached −422 nT while not reaching G5-class.
Substorms can cause magnetic field disturbances in the auroral zones up to a magnitude of 1000 nT, roughly 2% of the total magnetic field strength in that region. The disturbance is much greater in space, as some geosynchronous satellites have registered the magnetic field dropping to half of its normal strength during a substorm.
The sun and the intense magnetic activity it generates which causes the northern lights, waxes and wanes on an 11-yearlong solar cycle. The peak of activity – the solar maximum – occurs when ...