Physical Science

The Virgo Cluster is a galaxy cluster located about 60 million light-years from the Earth, consisting of over a thousand individual galaxies. It is at the astronomical centre of the Virgo Supercluster (a group of galaxy clusters, including our own),…
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Vernal Equinox is the term used to describe the moment in time when the middle of the sun is observable directly overhead from a location on the equator. The Vernal Equinox happens once every year on either March 20th or…
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Black holes- Do they even exist? Even though black holes have finally achieved acceptance in the public mind, there have still been questions regarding the existence and characteristics of black holes among the scientists. The “Classical” concept of a black…
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Most people will have heard of the phrase “once in a blue moon”, meaning something that occurs infrequently. It is a phrase that comes about directly from the cycle of the lunar moon, and today it relates to the appearance…
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Stars, one of the things that have helped to guide men and women to their destination, they have intrigued expert astronomers or amateur stargazers alike, their presence in ancient times invoked many superstitious beliefs such as the zodiac, lucky stars…
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The Milky Way galaxy is our home. While we may think it is just Earth and the Sun, and maybe the planets of the Solar System too, we are members of a family of stars some 100 000 light years…
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A fundamental problem facing the future of space exploration is tyranny of incomprehensible distance between stars, solar systems, across our one small galaxy and between neighbouring galaxies. At our current level of technology it takes the better part of one…
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Since the dawn of civilization and long before, night falling in the middle of the day, darkness seeming to eat the sun, has induced terror. People like a certain amount of stability in their day to day lives, we always…
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The definition of a lunar eclipse is when the moon moves into the shadow of the Earth created by the sun, therefore, distorting its image and color. There are three basic types of lunar eclipses: the penumbral eclipse, a total…
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A Hohmann transfer orbit is a special and common type of spacecraft maneuver which is used to move the spacecraft between two orbits. It was also known as a Vetchinkin transfer orbit during the Cold War, after a Soviet mathematician…
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