Eye in the sky satellite
Episode 1: driving the telescope (hubble – eye in the sky
SpaceX finally launched its new batch of Starlink satellites early Friday morning from the Kennedy Space Center after weeks of delays and several canceled attempts, adding another 57 satellites to the rocket company’s growing internet-beaming constellation.
The 10th batch of Starlink satellites was launched by SpaceX on Friday, except two “Tintin” research satellites launched in February 2018. Elon Musk’s space company has so far launched 595 Starlink satellites into Earth orbit. Around 500 of them are operational, making the constellation wide enough to provide internet access to certain parts of the planet.
SpaceX recently revealed that select customers in the United States and Canada would be able to try the service as early as this summer. By the end of this year, the company aims to provide basic internet service in North America, and by 2021, it hopes to have global reach, which would take about 14 more releases.
The light of those satellites caused concern among astronomers early in the Starlink project because they would sometimes obscure scientific observation. To fix this problem, SpaceX began installing a sun-blocking visor on top of all satellites on June 13. The first batch of “VisorSats” is already on its way to being operational. The visors are also mounted on the 57 satellites in Friday’s payload.
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Satellites orbit the Earth at a distance of 500 to 40,000 kilometers above the surface. Most are visible from Earth, and astronomers spend time gazing at them through telescopes for the purposes of space exploration and data collection.
Do satellites have the ability to blink? Satellites may not have their own source of illumination. They are made of metal, which reflects the light that falls on them. This happens at regular intervals, and it can be seen as satellites fly overhead and the light emitted from them appears as “flare” or “glint” to our naked eyes. The metal extensions of the satellite display steady light for a few seconds or minutes at a time, and they do not blink.
The satellites shine even in the dim night sky because they are well above us and the sunlight is still incident on them. Satellites mirror light that varies in intensity of brightness over time as they travel around the Earth.
The bright light emitted by the satellite that appears for a few seconds to the naked eye is known as satellite glint or satellite flare. This is caused by sunlight reflecting on the antennas, SAR, and solar panels, which redirect the light back to the earth.
Eye to the sky with ekbal hussain
Surveillance is all around us – on the Internet, on the streets, at work, at school, and in our homes. The incredible advancement of digital technology made the continuous surveillance possible. It is now possible to “collect it all,” as the NSA wished, and to hold and evaluate it all, thanks to powerful computers and vast storage facilities. Because of the low cost of digital videocameras, governments can easily afford to install millions of CCTV systems in cities and on highways. The Internet of Things was born as a result of miniaturization and a drastic drop in the price of computing power, allowing artificial intelligence to be embedded in any domestic computer, creating the ideal means of spying on us in our homes.
The same forces that are driving today’s privacy threats are also driving tomorrow’s threats. Another sector, satellites, is undergoing a technological revolution of its own. The foundations were laid in 1999, when NASA devised the CubeSat format, which is defined here:
Nanosatellites, which include CubeSats, are a type of research spacecraft. The cube-shaped satellites are measured in units, or U’s, and can be up to 12 U in size (a unit is defined as a volume of about 10 cm x 10 cm x 10 cm and typically weigh less than 1.33 kg).
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Astronomical satellites aren’t just a product of scientific thinking; they have deep origins in human psychology. Is it a natural instinct to explore what lies beyond the sky? The same desire to learn more about our environment has always driven scientists to find ways to see further than our eyes would usually see. People have attempted to deduce logic from solar events since ancient times, whether it’s the rotation of the earth or the patterns in the night sky.
Our knowledge of the universe has developed as a result of technological advancements and reasoning based on scientific theories. Researchers such as Galileo used systematic measurements and telescopic methods to determine the composition of the solar system and the positions of planets such as Venus in space. Finally, with the Soviet Union’s launch of the first satellite, Sputnik1, into earth’s orbit, scientists gained access to a new area of study and science. The concept was to use space observation satellites as an eye in the sky that could provide real-time images of celestial motions in space. Astronomical satellites were developed primarily to observe planets and take pictures in order to better understand their behavior and reliably predict future astronomical events. It overcame the most important barrier to observing planets from Earth, which was the thick atmospheric clouds near the earth’s surface, which were heavily laden with dust and pollutants.