Even a Kp index of 2 or 3 can produce beautiful auroras, but it gets exciting at 4 and above!Frequently asked questions about the northern lights Why are the northern lights different colours? The colour of the aurora depends on which chemicals are present and the altitude of the meeting ...
When facts are ___ and data hard to come by, even scientists occasionally throw aside the professional pretense of ___ and tear into each other with shameless appeals to authority and arguments that are unabashedly ad hominem. elusive...objectivit
USGS - Auroras and Earthquakes: Strange Companions- Release Date: JULY 6, 2020 In 1722 and 1723 a London clockmaker, George Graham, observed daily and consistent variations on one of his instruments, a “Needle upon the Pin” (a compass), for which he had no explanation. Swedish scientists ...
During solar maximum, auroras are seen as far south as Florida, even Mexico! Auroras often seem to be very close to the ground, but the lowest aurora is still about 100 kilometers above the ground, a distance much higher than clouds are formed or airplanes can fly. A typical aurora band...
To leave behind a black hole, a supernova must occur in a star with about 20 times the mass of the sun. Additional resources Find out what will happen to the Earth when the sun dies, from Live Science. Learn more about how stars form, evolve and die from NASA, and learn more about...
So if you are planning a trip to see the northern lights now is the time to do it. Not sure where to go? Here we have rounded up some of the best places to see auroras around the world. Related: Aurora colors: What causes them and why do they vary? The northern lights are crea...
But now it seems that a researcher has figured out how auroras (极光) really make sounds. "It has pretty much been confirmed all over the world," "historian Fiona Amery said. "In Canada, Norway and Russia, they are all hearing very much the same sounds." "The auroras can occur ...
So we found that during CMEs—with their enormous ejections of particles from the Sun—auroras are particularly intense. Now, as we’ve said, we can predict peaks in sunspot activity, but so far we can’t say the same for CMEs. ...