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            Parallax is the observed displacement of an object caused by the change of the observer's point of view. In astronomy, it is an irreplaceable tool for calculating distance of far away Stars.             Observed from Earth, the night sky appears two-dimensional. But it's anything but. However, it took astronomers thousands of years to figure out how to measure distances of stars from our planet and create actual three-dimensional maps reflecting the distribution of stars and galaxies in the universe. One of the key method they use is the so-called Parallax, which relies on the same effect as stereoscopic vision.             It works like this: hold out your hand, and place your extended thumb over a  distance object. Now, switch eyes, so that your left is closed and your right is open. Your thumb will appear to shift slightly against the background. By measuring this small change and knowing the distance between your eyes, you can calculate the distance to your thum

Image credits: NASA climate kids What is permafrost?             Simple defined, permafrost is ground which remains at temperatures below 0°C for at least two consecutive years. Permafrost is considered `continuous` when more than 90% of an area is underlain by permafrost; permafrost is defined as `discontinuous` or `sporadic` when percentages are lower. Permafrost occupies nearly 65% of the territory of the Russian Federation. Permofrost is a very common phenomenon east of the Ural mountains; the extent in the European part of Russia is limited. Changes in permafrost until now             The permafrost regions occupied about 25 percentage of the northern hemispheres terrestrial surface and almost 65% of the Russia (1,35). Warming, thawing, and degradation of pharma Frost have been observed in many locations in recent decades and or likely to accelerate in the future as result of climate change (1,35,43). The Western Russian Arctic is experience in some of the highest rate

            Maths has predicted wormholes, but for now these bridges through space-time remains hypothetical.             The wormhole theory postulates that year theoretical passage through space-time could create shortcuts for long journeys across the universe. Wormholes or predicted by the theory of general relativity. But be wary: warmhols bring with them the dangerous of sudden collapse, high radiation and dangerous contact with exotic matter. Image credit: Thought co WORMHOLE THEORY             Warmhols were first theorized in 1916, though that wasn't what they were called at the time. While reviewing another physicist's solution to the equation in Albert Einstein's theory of relativity, Austrian physicist Ludwig Flamm realized another solution was possible. He described your "White hold", a theoretical time reversal of your black hole. Entrances to both black and white holes could be connected by your space-time conduit.           In 1935, Einst

             Image credit:en.wikipedia.org              The Bootstrap Paradox is theoretical paradox of time travel that occurswhen an object or piece of information sent back in time becomes trapped within an infinite cause-effect loop in which the item no longer has a descernible point of origin, and is said to be "uncaused" or "self-created". It is also known as an Ontological Paradox, in reference to ontology, a branch of metaphysics dealing with the study of being and existence. Etymology of Bootstrap Paradox                          The term Bootstrap Paradox is derived from the expressions to "pull oneself over a fence by one's bootstraps", which indicates performing an impossible or Ludicrous task. In this instance, by pulling yourself over a fence by holding onto your bootlaces and tugging upwards. The first reference to such an absurdly impossible action is widely believed to originate from an 18th century literary classic, '

            General relativity is physicist Albert Einstein's understanding of how gravity affects of fabric of space-time. Image credit: American Physical Society             The theory, which Einstein published in 1915, expanded the theory of special relativity that he had published 10 years earlier. Special relativity argued that space and time are inextricably connected, but that theory didn't acknowledge the existence of gravity.             Einstein spent the decade between the two publications determining that particularly massive object warp the fabric of space-time, a distortion that manifests as gravity, according to NASA. How does general relativity work?             To understand general relativity, first, let's start with gravity, the force of attraction that two objects exert on the another. Sir Isaac Newton quantified gravity in this same text in which the formulated his three laws of motion, the principia.             The gravitational force dugg

                Image Credits: www.testimnews.com                    GRANDFATHER PARADOX                       The grandfather paradox is a self Contradictory situation The tariff in sometime travels in areas that are illustrated by the impossible scenario in which a person travels back in time only to kill their grandfather (Who could no longer go on to produce once parent, And hence where does that leave you on your ancestor killing event?). The paradox is sometimes taken as an argument against the logical possibility of travelling backwards in time according to the stanford encyclopaedia of philosophy.Within the framework of modern physics our there or ways to avoid the paradox of without dispensing With time travel altogether.           GRANDFATHER PARADOX EXPLAIN                            Let's Suppose you have a time machine that allows you to travel back into the past. while you're there you accidentally kill one of your grandparents - or any