Explorer 1 Overview - NASA
Mar 18, 2015 · Explorer 1 revolved around Earth in a looping orbit that took it as close as 354 kilometers (220 miles) to Earth and as far as 2,515 kilometers (1,563 miles). It made one orbit every 114.8 minutes, or a total of 12.54 orbits per day.
Explorer Information - NASA
Explorer-I, officially known as Satellite 1958 Alpha, was the first United States earth satellite and was sent aloft as part of the United States program for the International Geophysical Year 1957-1958.
Explorer 1 - NASA
Jul 25, 2023 · The competition to put a satellite into orbit ― a goal of the International Geophysical Year (IGY), which ran from July 1, 1957 to Dec. 31, 1958 ― was particularly intense. Explorer 1 was the first satellite launched by the United States when it was sent into space on January 31, 1958.
Explorer 1 | Overview - NASA
Explorer 1 was the first successful U.S. satellite. It was launched Jan. 31, 1958 at 10:48 p.m. (EST) from Cape Canaveral, Florida, after two days of launch delays due to high winds. The Jupiter-C launch rocket was built at the Army Ballistic Missile Agency in Huntsville, Alabama, under the direction of Wernher von Braun.
10 Things to Know About Explorer 1, America’s First Satellite
Jan 29, 2018 · The first U.S. scientific discovery in space came from Explorer 1. Earth is surrounded by radiation belts of electrons and charged particles, some of them moving at nearly the speed of light, about 186,000 miles (299,000 km) per second.
Story of Explorer 1 - NASA
Jan 19, 2018 · Explorer I relayed information from space to Earth stations until May 23, 1958, when its batteries were exhausted. It continued to orbit for several years before finally reentering the Earth’s atmosphere on March 31,1970.
Explorer 1 | Home Page
Use your Mac, PC or mobile device to orbit alongside Explorer 1 as it circles the globe after launch. This JPL-developed app can take you on other virtual journeys with NASA spacecraft around the solar system as you join us to “Explore as One.”
Explorer 1 - Earth Missions - NASA Jet Propulsion Laboratory
Explorer 1 became the first successfully launched satellite by the United States when it was sent to space on January 31, 1958. A quick response to the Soviet Union's launch of Sputnik 1, Explorer 1's success marked the beginning of the U.S. Space Age.
Explorer I - Exploded View - NASA
Oct 25, 2011 · Exploded view of the first successful U.S. satellite, Explorer I, showing the instruments inside. Explorer I was launched January 31, 1958 and discovered the radiation belts that surround Earth.
Explorer 1: The Beginning of American Space Science
Jan 23, 2018 · Explorer 1, as it would soon come to be called, was America's first satellite. Against the backdrop of the 1950s Cold War, after the Soviet Union successfully launched Sputnik, Americans were determined to launch their own Earth-orbiting satellite.