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Evpatoria Planetary Radar
The Yevpatoria RT-70 radio telescope (P-2500, RT-70) is an RT-70 radio telescope and planetary radar at the Center for Deep Space Communications, Yevpatoria, Crimea. In the scientific literature is often called Evpatoria Planetary Radar (EPR). History With its 70-meter antenna diameter, it is among the largest single dish radio telescopes in the world. It has an advantage in comparison with other large radio telescopes in the fact that the complex includes powerful transmitters that allow active space experiments. Powerful electromagnetic beams can be accurately targeted and the signals received can be analyzed. For this reason, the Yevpatoria RT-70 radio telescope is one of only two in the world that are able to transmit messages to extraterrestrial civilizations, i.e. the multiple Cosmic Calls, Teen Age Messages or A Message from Earth (AMFE). Radio telescopes are highly sensitive detectors of signals from outer space. The radio telescope is depicted on Russia's commemorativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yevpatoria
Yevpatoria ( uk, Євпаторія, Yevpatoriia; russian: Евпатория, Yevpatoriya; crh, , , gr, Ευπατορία) is a city of regional significance in Western Crimea, north of Kalamita Bay. Yevpatoria serves as the administrative center of Yevpatoria Municipality, one of the districts (''raions'') into which Crimea is divided. It had a population of History Greek settlement The first recorded settlement in the area, called ''Kerkinitis'' (), was built by Greek colonists around 500 BCE. Along with the rest of the Crimea, Kerkinitis formed part of the dominions of King Mithridates VI Eupator ( BCE), from whose nickname, ''Eupator'' "of noble father" the city's modern name derives. Khanate period From roughly the 7th through the 10th centuries, Yevpatoria was a Khazar settlement; its name in Khazar language was probably ''Güzliev'' (literally "beautiful house"). It was later subject to the Cumans (Kipchaks), the Mongols and the Crimean Khanate. Du ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Very-long-baseline Interferometry
Very-long-baseline interferometry (VLBI) is a type of astronomical interferometry used in radio astronomy. In VLBI a signal from an astronomical radio source, such as a quasar, is collected at multiple radio telescopes on Earth or in space. The distance between the radio telescopes is then calculated using the time difference between the arrivals of the radio signal at different telescopes. This allows observations of an object that are made simultaneously by many radio telescopes to be combined, emulating a telescope with a size equal to the maximum separation between the telescopes. Data received at each antenna in the array include arrival times from a local atomic clock, such as a hydrogen maser. At a later time, the data are correlated with data from other antennas that recorded the same radio signal, to produce the resulting image. The resolution achievable using interferometry is proportional to the observing frequency. The VLBI technique enables the distance between t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A Message From Earth
Gliese 581c (Gl 581c or GJ 581c) is a planet orbiting within the Gliese 581 system. It is the second planet discovered in the system and the third in order from the star. With a mass at least 5.5 times that of the Earth, it is classified as a super-Earth (a category of planets with masses greater than Earth's up to ten Earth masses). Gliese 581c gained interest from astronomers because it was reported to be the first potentially Earth-like planet in the habitable zone of its star, with a temperature right for liquid water on its surface, and, by extension, potentially capable of supporting extremophile forms of Earth-like life. However, further research casts doubt upon the planet's habitability. It is tidally locked (always presents the same face to the object it is orbiting) so if life had a chance to emerge, the best hope of survival would be in the " terminator zone". In astronomical terms, the Gliese 581 system is relatively close to Earth, at in the direction of the con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
