The first artificial satellite flew into space in 1957, changing life on earth forever. In a little while, we depended on satellites for weather forecasts and telecommunications. Today, fleets of satellites are flying into space for applications like broadband or Earth imaging.

As our skies get more jampacked with satellite constellations, engineers must deal with issues such as orbital debris and satellite trails that reduce astronomical observations. These problems won’t be fixed overnight. But for the time being, this slideshow celebrates some of the good things satellites have inked for humanity by highlighting the most historic orbiting satellite trailblazers that revealed secrets of the solar system.

Sputnik, more basically known as Sputnik 1, was the first artificial satellite to safely make it into Earth orbit. The Soviet Union launched it in secret on Oct. 4, 1957, from the Baikonur Cosmodrome in Kazakhstan, the same location where Russia introductions crews to the International Space Station nowadays. ترددات النايل سات

Whilst in space, Sputnik gathered data on the density of the higher layers of Earth’s atmosphere and measured how well radio signals transmit in the ionosphere, a layer in the higher atmosphere that is full of charged fibers. Space observers commonly say that the surprise of Sputnik spurred the united states to engage in a space race to send satellites — and eventually, astronauts — into orbit to show the merits of democracy over communism.

The united states made two attempts to send a satellite into space after the Soviet Union’s Sputnik. The first effort failed, but Explorer 1 successfully flew into space on Jan. 31, 1958.

Explorer 1 is best remembered for confirming specific zones of charged fibers holding rays in the magnetosphere of Earth, called the Jeep Allen belts. The belts have stayed continued objects of investigation across space missions ever since, to better appreciate how they fluctuate with space weather — the interaction of the sun’s activity with the Earth’s sphere of influence.

The main mission of NASA’s Explorer 6 satellite, which launched on Aug. 7, 1959, was to study rays trapped in Earth’s higher atmosphere, and to determine how often micrometeorites pierce our atmosphere and the area near our planet.

But a valuable side mission saw the satellite take the first image of Earth from space on Aug. 14, 1959, over Mexico. The image, although low-resolution by today’s standards, demonstrated the potential of using space machines to take pictures of our own planet. Today we commonly use Earth statement satellites to image the surface and atmosphere in many wavelengths of light to track phenomena such as climate change, gardening yield or natural disasters.

Echo 1 was the first experiment to try passive communications from orbit. The spacecraft was a balloon made of Mylar polyester film that could reflect microwave signals. The satellite was tested for transcontinental and intercontinental telephone, radio and television signals.

While Echo 1 and its successor Echo 2 worked well, NASA selected to focus on active communications technology. Still, the “sateloons” spurred research into inflatable structures that led to applications like the Bigelow Aerospace module now attached to the International Space Station.

NASA’s TIROS 1 (Television and Infrared Statement Satellite) launched on April 1, 1960 on a test mission to see how well satellites could send TV pictures from space to Earth to observe the next thunderstorm.

The satellite had two cameras, a vast angle one and a narrow angle one, to take pictures of fog up cover over Earth. Today, most of our weather forecasts come from satellites that constantly gaze at the Earth from geosynchronous orbit, although more small satellites in low Earth orbit are supplementing those observations. TIROS also ushered in satellites specialized in TV broadcasting, starting with Telstar in 1962.

Soviet cosmonaut Yuri Gagarin became the first person to fly in space on April 12, 1961, achieving three orbits before returning to Earth. This milestone is celebrated worldwide as “Yuri’s Night” every year on the birthday of his flight.

At the time of his flight, Gagarin’s mission was seen in the context of the space race between the united states and the Soviet Union. Decades on, however, the mission represents the day that space opened up to humans — humans that eventually participated from numerous countries around the world. More than 500 people have now flown into space, and this number could expand quickly when private space companies begin sending paying customers aloft.

The Soviet Union’s Luna 10 achieved two major milestones in 1966, becoming the first satellite to orbit anybody but Earth — and also becoming the first satellite to orbit the silent celestial body.

The spacecraft measured the moon’s magnetic field, rays environment, gravity field and other metrics. A gamma ray spectrometer gathered compositional information about the moon’s surface, showing a lot of basalt.

Only two years later, in late 1968, the first satellite (spacecraft) with humans on board orbited the silent celestial body — NASA’s Apollo 8. The first human silent celestial body landing, Apollo 11, followed on Come july 1st 20, 1969.

NASA’s Mariner 9 mission was originally supposed to be part of a two-spacecraft set orbiting Mars, but Mariner 8 never made it into space. Mariner 9 prevailed and arrived safely to Mars orbit on Nov. 14, 1971, making it the first spacecraft to orbit another planet. Mariner 9 carried out the mission objectives of both spacecraft, mapping 70% of the Martian surface and studying changes on top and in the atmosphere.

Mariner 9’s imaging was delayed by a huge Martian sandstorm that obscured most of the surface, but when the dust died down, it sent the first images of Red Planet volcanoes and the huge Valles Marineris (a canyon) back to Earth. Mariner 9 showed that Mars was a dynamic planet and helped spur further investigations into searching for signs of life, which many Red Planet spacecraft continue to do today.