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The science of physics plays a key role in many space weather phenomena. Charged particles, magnetic fields, forces and motion, and the electromagnetic spectrum are all part of space weather ...Read more Brought to you by CISM
The Cambrian period, at the beginning of the Paleozoic, was the first time that multicellular life forms flourished on Earth. By the end of the Paleozoic, and beginning of the Mesozoic, all the continents ...Read more
Jupiter is the largest planet in our Solar System. This giant ball of hydrogen and helium gas is large enough to contain more than 1,000 Earths. Dozens of moons circle the 5th planet from the Sun ...Read more
12/20 Carl Sagan, an American astronomer, died on this date in 1996 Details
12/23 Gerard Kuiper, an American astronomer, died on this date in 1973 Details
12/25 On this date in 1758 Johann Palitzsch observed Halley's comet Details