Showing posts with label Sputnik. Show all posts
Showing posts with label Sputnik. Show all posts
Monday, March 10, 2014
"Joshua Lederbeg, ... Carl Sagan Helped Pioneer the Search for Extraterrestrial Life"
Astronomy and biology have been circling each other with timid infatuation since the first time a human thought about the possibility of other worlds and other suns. But the melding of the two into the modern field of astrobiology really began on Oct. 4, 1957, when a 23-inch aluminum sphere called Sputnik 1 lofted into low Earth orbit from the desert steppe of the Kazakh Republic. Over the following weeks its gently beeping radio signal heralded a new and very uncertain world. Three months later it came tumbling back through the atmosphere, and humanity’s small evolutionary bump was set on a trajectory never before seen in 4 billion years of terrestrial history.
At the time of the ascent of Sputnik, a 32-year-old American called Joshua Lederberg was working in Australia as a visiting professor at the University of Melbourne. Born in 1925 to immigrant parents in New Jersey, Lederberg was a prodigy. Quick-witted, generous, and with an incredible ability to retain information, he blazed through high school and was enrolled at Columbia University by the time he was 15. Earning a degree in zoology and moving on to medical studies, his research interests diverted him to Yale. There, at age 21, he helped research the nascent field of microbial genetics, with work on bacterial gene transfer that would later earn him a share of the 1958 Nobel Prize.1,2
Like the rest of the planet, Australia was transfixed by the Soviet launch; as much for the show of technological prowess as for the fact that a superpower was now also capable of easily lobbing thermonuclear warheads across continents. But, unlike the people around him, Lederberg’s thoughts were galvanized in a different direction. He immediately knew that another type of invisible wall had been breached, a wall that might be keeping even more deadly things at bay, as well as incredible scientific opportunities.
If humans were about to travel in space, we were also about to spread terrestrial organisms to other planets, and conceivably bring alien pathogens back to Earth. As Lederberg saw it, either we were poised to destroy indigenous life-forms across our solar system, or ourselves. Neither was an acceptable option. When he returned to the United States he quickly threw himself into learning all he could about astronomy and rocketry, and began writing urgent letters to the National Academy of Sciences, alerting his colleagues to the imminent danger. . . .
. . . Lederberg wasn’t finished though. He and the young Carl Sagan had become friends in the early 1960s, and together they helped define the emerging fields of solar system exploration and the search for extraterrestrial life. . . .
Friday, October 05, 2012
How Sputnik Changed the World 55 Years Ago Today | VIDEO
Fifty-five years ago today, the Space Race was kicked into gear by a silver basketball flying through the sky.
Sputnik 1, the Soviet probe that became the first manmade object to reach space, launched Oct. 4, 1957. The feat proved the Soviet Union's technological bonafidesand spurred the United States into stepping up its game in space.
The anniversary is being marked by the 13th annual World Space Week, which includes hundreds of space-themed events in dozens of countries from Oct. 4 through Oct. 10.
Sputnik ("traveling companion" in Russian) was a small sphere about 22 inches (56 centimeters) in diameter, with four long antennas protruding from its head. The 183-pound (83 kilograms) probe used a radio beacon to send a beeping sound back to Earth as it orbited the planet every 98 minutes.
This beeping was played over the world's radio stations, and in combination with the sight of the probe orbiting Earth, sparked fear in Americans that our country was falling behind the Soviets in technological capability. . . .
Sputnik 1, the Soviet probe that became the first manmade object to reach space, launched Oct. 4, 1957. The feat proved the Soviet Union's technological bonafidesand spurred the United States into stepping up its game in space.
The anniversary is being marked by the 13th annual World Space Week, which includes hundreds of space-themed events in dozens of countries from Oct. 4 through Oct. 10.
Traveling companion
Sputnik ("traveling companion" in Russian) was a small sphere about 22 inches (56 centimeters) in diameter, with four long antennas protruding from its head. The 183-pound (83 kilograms) probe used a radio beacon to send a beeping sound back to Earth as it orbited the planet every 98 minutes.
This beeping was played over the world's radio stations, and in combination with the sight of the probe orbiting Earth, sparked fear in Americans that our country was falling behind the Soviets in technological capability. . . .