Studying the Universe
STUDYING THE UNIVERSE * Before 1610, people viewed celestial bodies with their naked eyes. * In 1610 Galileo Galilei first used a telescope to observe celestial bodies. * In the following centuries, astronomers developed more powerful telescopes. * However, details gathered by means of scientific instruments were not enough to satisfy scientists.
TECHNOLOGICAL ADVANCEMENTS * Scientists have developed advance equipment in order to explore Earth and other celestial bodies closely. * These pieces of equipment have enabled man to land on the moon and other planets to gather actual soil and rock samples. * These advancements include artificial satellites, space shuttles, space stations, and other spacecrafts.
ARTIFICIAL SATELLITES * These are man-made bodies orbiting Earth. * Originally, they were launched in order to observe Earth’s weather conditions and ocean currents from a distance. * Eventually, satellites have been used to investigate the space environment, including our moon and the other planets in our solar system.
SPUTNIK 1
It was in 1957 when the first artificial satellite, Sputnik 1, was launched into space by the former USSR. It carried a radio transmitter and was the size of a football.
SPUTNIK 2 * Sputnik 2 carried a dog named Laika into space
Explorer 1 * The US launched its own first satellite, Explorer 1, into space on January 31, 1958. * Explorer 1 discovered and studied the Van Allen belts, the radiation areas around the Earth.
Other Artificial Satellites * Other artificial satellites launched were the former USSR’s Luna 2, the first space probe to reach the moon on September 12, 1959 * This includes the USA’s Tiros 1, the first of a series of highly successful weather satellites launched in April 1960.
THE FIRST AMBSSADOR OF PLANET EARTH * On April 12, 1961, Vostok 1 of USSR carried the first human into space. * The flight of Yuri Gagarin, the first “Ambassador of
TECHNOLOGICAL ADVANCEMENTS * Scientists have developed advance equipment in order to explore Earth and other celestial bodies closely. * These pieces of equipment have enabled man to land on the moon and other planets to gather actual soil and rock samples. * These advancements include artificial satellites, space shuttles, space stations, and other spacecrafts.
ARTIFICIAL SATELLITES * These are man-made bodies orbiting Earth. * Originally, they were launched in order to observe Earth’s weather conditions and ocean currents from a distance. * Eventually, satellites have been used to investigate the space environment, including our moon and the other planets in our solar system.
SPUTNIK 1
It was in 1957 when the first artificial satellite, Sputnik 1, was launched into space by the former USSR. It carried a radio transmitter and was the size of a football.
SPUTNIK 2 * Sputnik 2 carried a dog named Laika into space
Explorer 1 * The US launched its own first satellite, Explorer 1, into space on January 31, 1958. * Explorer 1 discovered and studied the Van Allen belts, the radiation areas around the Earth.
Other Artificial Satellites * Other artificial satellites launched were the former USSR’s Luna 2, the first space probe to reach the moon on September 12, 1959 * This includes the USA’s Tiros 1, the first of a series of highly successful weather satellites launched in April 1960.
THE FIRST AMBSSADOR OF PLANET EARTH * On April 12, 1961, Vostok 1 of USSR carried the first human into space. * The flight of Yuri Gagarin, the first “Ambassador of