The Knowledge Centre

    Our Universe is full of most strange and mysterious objects. One of these objects are neutron stars. Neutron stars are among the objects having most extreme density and gravity. After black holes neutron stars are the one with most density and gravity. Neutron stars were first predicted by Swiss  astronomer Fritz Zwicky in 1933, but they seemed so fantastic that they were  ignored by scientists for decades. In 1933, with Walter Baade, he coined the word “supernova” and correctly predicted the existence of n eutron stars. We will discuss briefly about neutron stars and how they are formed. Illustration Of A Neutron Star What Is A Neutron Star?    In the aftermath of a supernova explosion, there is a tiny remnant called a neutron star. The density of neutron stars is unbelievably high and violent. Due to very high density, the gravity becomes extremely strong. The mass of neutron star could be equal to one, two or three suns but compressed to a diameter of only 25 kilometres. It is s

   The Universe is big, so big that we can't imagine it's vastness. The Universe is expanding and not only expanding but the expansion is being accelerated. The diameter of visible Universe is approximately 95 billion light years, which contains billions of galaxies and each galaxy contains billions to trillions of stars. We can't see across 95 billion light years because light from that part of the Universe have not reached us yet. So, there is a lot of Universe that we can't see. It appears that the Universe has a quite big size. But, there remains a question that will the Universe remain forever? or the Universe will end? The short answer is "yes" the Universe has an ending. We will discuss some possible scenarios in which the Universe will end. Image Of Universe By Hubble Space Telescope Big Crunch   One of the possible scenarios the Universe could end is "big crunch". The Universe is expanding and there is a mysterious force speeding up the expa

     Are we the only living species in the entire Universe? The observable Universe is about 90 billion light years in diameter. There are at least 100 billion galaxies in the observable Universe each with 100 to 1000 billion stars. Recently, we have found that planets are also very common, which orbit these stars and there are probably trillions of habitable planets. Which means there is a lot of opportunity for life to develop and exist. But the question is, where is it? And why we have not seen it yet?    Even if there are alien civilizations in the other galaxies there is no way we will ever know about them. Basically, everything outside of our local group is out of our reach forever because of the expansion of the Universe. Even, if we had really fast spaceships, it would take billions of years to reach our nearest galaxy. So, finding life there would be impossible for us. So, lets focus on our home galaxy Milky Way. Possibility of Life in Milky Way   Our home galaxy, the Milky W