Carl Sagan

Credit:NASA/JPL
Occupation: Astrophysicist, Author, TV presenter
Year born: 1934
Research Areas: Extraterrestrial Life, Planetary Science
Occupation: Astrophysicist, Author, TV presenter
Year born: 1934
Research Areas: Extraterrestrial Life, Planetary Science
Occupation: Mathematician, Astronomer
Year born: 1868
Research Areas: The Sun, Sunspots, Magnetic Storms
Solar flares are sudden variations in the brightness of a surface region of the Sun. Magnetic energy builds up in the solar atmosphere, above active regions, where sunspots are located. This magnetic energy is suddenly released as radiation across the entire electromagnetic spectrum.
Life on Earth has taken billions of years to evolve. Life includes anything which can do the following things:
The Sun is average star, but without its energy we would not exist.
Earth is the third planet from the Sun.