A solar wind is a stream of ionized hydrogen, helium, and other heavy ions that radiates outward from the sun and reaches velocities of about 1 million mph (1.6 million km/h) during â€œquietâ€ periods. It pushes the gas of comets' tails away from the Sun, and its â€œgustsâ€ cause geomagnetic disturbances and auroras on Earth. It is believed that the solar wind has stripped away up to 1/3 of Mars' original atmosphere. What protects the Earth's atmosphere?
Back in the day
Lindh was a Swedish Social Democrat and an important proponent of the European Union. She was Chairman of the Council of the European Union in 2001 and, at the time of her murder, a prime candidate to become the next President of the Social Democrats and Prime Minister of Sweden. She was attacked just prior to a Swedish referendum on the Euro, at the height of a public campaign she led for the approval of the currency. Why was the perpetrator's sentence changed for a brief period?
Born on a day like today
Yokoi was one of the most important figures in the history of the Nintendo video game company. While employed there, Yokoi designed the Game Boy handheld game console and improved the D-Pad, the cross-shaped multi-directional input device found on most modern control pads. He also helped produce many popular arcade games, including the original Mario Bros. and Donkey Kong. What simple product, developed by Yokoi for his own amusement, sold 1.2 million units and launched his career?