Have you ever seen a shooting star at night and wished on it? That practice of wishing from a shooting star from ancient times still exists today, but do wishes really come true? Most people said they wished on a falling star and had their wish granted while other people saw them a few times and wished but not a single wish came true. Regardless of this mystery and unresolved question, to witness a shooting …
1. Brown Dwarfs Brown dwarfs are sometimes referred to as “failed” stars. They are too low in mass to fuse atoms at their cores, and thus don’t burn with the fires, that keep stars like our sun shining steadily for billions of years. Instead, these objects cool and fade with time, until what little light they do emit is at infrared wavelengths. The Y’s are the coldest members of the brown dwarf family. One of …
1. Satellite The Moon is not a planet, it is the natural satellite of the Earth. 2. Surface The surface area of the Moon is 37,932,000 square km (14,658,000 square miles) or 9.4 billion acres. 3. Radius The radius of the Moon is 1,738 kilometers (1,080 miles). 4. Diameter The diameter of the Moon is 3,476 kilometers (2,160 miles). 5. Weight The total weight of the Moon is 74 sextillion kilograms (81 Quintillion Tons). 6. …
1. Naming Earth is the only planet in the solar system whose name does not derive from gods or goddesses names. 2. Centre of the Universe Due to the apparent movements of the Sun and the planets in relation to our viewpoint, ancient civilizations believed in the Ptolemaic system, a description of the cosmos where Earth is at the orbital center of all celestial bodies. It was not until the time of Copernicus (sixteenth century) …
Nothing in the universe remains unchanged, and stars are no exception. But we cannot observe a star changing because it lives for billions and billions of years. The origin of all stars are gas and dust clouds that slowly form scattered atoms in space. The stars arise in groups, most of which is divided, but others are held together by gravity. The lifetime of a star depends on its mass. The more mass, the more …