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Extent of human radio broadcast

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ASSUMING THAT THERE ARE OTHER INTELLIGENT CIVILISATIONS OUT THERE IN THE UNIVERSE, WHAT IS THE LIKELIHOOD THAT WE’LL EVER BE ABLE TO COMMUNICATE?   The key to answer this question is to look at the Drake Equation. Where N is the number of civilisations in our galaxy with which radio-communication might be possible (i.e. planets past our light cone); The DE tells you the necessary informations we need to estimate an answer for. The probability we communicate with another civilisation depends on the number of stars in our galaxy (represented by the average star-formation rate R * ), the fraction of stars with planets (f p ), the average number of planets in the Goldilock zone (n e ), the fraction of planets that develop life (f l ), the fraction of planets with life that develop an intelligent life form(f i ), the fraction of them with ability to communicate using technology (f c ) and finally the length of time this civilisation release signal into space (L). T...

Space Roar : Silent Scream

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The cosmos has plenty of terrifying Lovecraftian features, but one of my favorites is the Space Roar.  There is a loud radio signal, described as a constant hiss, that seems to pervade the cosmos. It is louder than the radio signature of radio galaxies, and it is without explanation.   It was discovered in 2009 by the team using the ARCADE experiment. The Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission is a great experiment which was design to detect the radio waves emitted by very distant galaxies. Our atmosphere is opaque to radio waves. This is why we can transmit signals to the other side of the planet. Radio waves bounce on the atmosphere when we produce them and off it when coming from space. To circumvent this situation, ARCADE was placed on a high altitude balloon, which took the instrument to 37 km, enough to be able to detect the right radio waves.  I’m the Universe, hear me roar. The  specific radi...

Our new academy website

Come on guys check out our club's brand  new website Astrometerica academy website !!!!!!!!
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Super massive "Black Hole" and Quasar in the center of a Galaxy In this vast universe, there are several galaxies with a black hole and quasar in its midst... but, these objects are so mysterious that more we want know them the more distant they seem. QUASAR Quasars, the most distant objects discovered by astronomers in the Universe, are very bright, large point-like objects just like stars; most are larger than our  Solar System , and they radiate enormous amounts of energy. Quasars can be a trillion times brighter than the   Sun ; they radiate more energy than 100 normal   galaxies   combined. Quasars are most likely the centers of active galaxies, and may produce their energy from the huge black holes found in the center of the galaxies in which the quasars are located. Quasars drown out the light from all the other   stars   in the same galaxy because they are so bright. Quasars look like stars, but are much farther away than ...

Pulsar : The Flickering Giants

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What is a PULSAR...    A pulsar  is a highly magnetized rotating  neutron star  or  white dwarf  that emits a beam of  electromagnetic radiation . This radiation can be observed only when the beam of emission is pointing toward Earth, and is responsible for the pulsed appearance of emission. Neutron stars are very  dense , and have short, regular rotational  periods . From Earth, pulsars often look like flickering stars. On and off, on and off, they seem to blink with a regular rhythm. But the light from pulsars does not actually flicker or pulse, and these objects are not actually stars.  Pulsars radiate two steady, narrow beams of light in opposite directions. Although the light from the beam is steady, pulsars appear to flicker because they also spin. It's the same reason a lighthouse appears to blink when seen by a sailor on the ocean: As the pulsar rotates, the beam of light may sweep across the Earth, t...

Subterranean waterfall

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 SUBTERRANEAN WATERFALL  There are many fasnitating wonders in this world and one of these are a undergroud waterfall ....  these waterfall hidden from world flows in depth of this world, so lets know more about it.       Subterranean Waterfall or underground waterfall are a type of waterfall which are located    underground or in a cave. Subterranean waterfall are present on or under sea level. They are a   common feature in cave systems where there are vertical or near vertical geological structures for the weathering process to exploit, and sufficient gradient between the sink and the rising. Vrtoglavica Cave's waterfall are the worlds longest underground waterfall present in Slovenia,Italy. its height is around 400m (1,300 ft)     A renowned example of sunterranean waterfall are Ruby falls present in United States,which is largest and deepest underground waterfall present in America. some oth...