All about Universe

1. We See Past In The Sky. Everyday when we see in the day or night sky we see the past of the objects because they are very far away from our Earth and light takes much time to travel that much distance to our eyes. For example– a bright star Vega which is 25 light years away from the Earth 🌎 and when we see it we are watching the star which was 25 years ago. 2. Millions Of Litres Of Alcohol!! At the centre of our Milky Way Galaxy a huge cloud of gas and dust is present which is called Sagittarius B and is 26000 light years away from our Solar System and it has 10 Billion Billion Billions litres of Alcohol.  3. Revolution Of Solar System. Our Solar System takes 225 million years to orbit one time around the Milky Way Galaxy that means when the Solar System was in this position last time there was the starting of Dinosaurs on our Earth.  4. Neptune's Discovery Neptune is only planet which was discovered before it was seen by the telescopes using mathematical predictions. It was fi

Outlined here are some of the largest asteroids of Solar System. 1. CERES Ceres is the first known Asteroid, discovered on 18 January 1801 by Giuseppe Piazzi at Palermo Astro n omical Observatory. It was originally considered a planet, but was rec lassified as an Asteroid in the 1850s after many other objects in similar orbits were discovered.  Ceres is the largest object in the main Asteroid belt between the orbits of  Mars and Jupiter . One-fourth mass of the Asteroid Belt is embraced only in Ceres, with a diameter of 940 km (580 mi) and is large enough to be rounded by its own Gravity. Ceres appears to be partially differentiated into a muddy (ice-rock) mantle/core and a less- dense but stronger crest that is at most 30% ice. Probably today there is  no internal ocean present but there is a brine that can flow through the outer mantle and reach the surface. The surface is a mixture of water ice and various hydrated minerals like carbonated and clay. In January 2014, emissions of wa

1. Ganymede Ganymede is the largest Moon (Natural Satellite) of planet Jupiter and most massive of all Moons in our Solar System. Diameter of Ganymede is 5268km (3273mi) which is 8% larger than that of planet Mercury and its mass is also largest of all moons of the Solar System and is 2.2 times of our Moon. Ganymede is the third of the Galilean moons, the first group of objects discovered orbiting another planet. It is composed of approximately equal amounts of silicate rock and water.  Surface of Ganymede is composed of mainly two types of terrain: Dark Region, dated to 4 billion years ago and is saturated with impact craters, covering one-third of it. Lighter Region, which cover the remainder crosscut by extensive grooves and ridges which are slightly less ancient.  The average density of Ganymede is 1.936g/cm³, suggests a composition of about equal parts Rocky material and mostly water ices. Some of the water is liquid, forming an underground ocean.  Ganymede has a permanent (intrin

Neptune is the eighth and the farthest known planet from the Sun in our Solar System. This is the fourth largest planet in terms of diameter and third largest in terms of mass. It's mass is 17 times than that if the Earth and slightly more than its twin planet, Uranus. Neptune is denser and physically smaller than Uranus because its greater mass causes more gravitational compression of its atmosphere. It is named after the Roman God of the Sea and has the astronomical symbol ♆, a stylised burning of the God Neptune's trident.  We can't see Neptune with our naked eyes and it is the only planet in the Solar System which is found using mathematical predictions and not by empirical observation. Neptune was visited by Voyager 2, when it flew by the planet on 25 August 1989; Voyager 2 remains the only spacecraft to visit Neptune.  Physical Characteristics Like Jupiter and Saturn, Neptune primarily consists of hydrogen and helium and traces of hydrocarbons and possibly nitrogen, t

Uranus is the seventh planet from the Sun in our Solar System. It is the third largest planet in our Solar System in terms of diameter and fourth in terms of mass. Mass of Uranus is 14.5 times greater than Earth. Average density of Uranus if very less than Earth because Earth is made up of rocky material and Uranus is a gas giant. Its name is a reference to the Greek God of the sky, Uranus, who according to Greek mythology who was the great-grandfather of Ares (Mars), grandfather of Zeus (Jupiter) and father of Cronus (Saturn). Although Uranus can be seen without using a telescope with naked eye.It is so far from the Earth with a very low amount of brightness that the ancient scholars were not ready to accept it as a planet, they used to think that this is a star which is very far from our Solar System. Finally on 13 March 1781, William Harshel discovered Uranus as a planet, and it was the first planet discovered using binoculars. Uranus is one of the four Gas Giants of our Solar Syste

Saturn is the sixth planet from the Sun and is the second largest of all after Jupiter. Saturn is also a Gas Giant like Jupiter and has a radius of about 9 and a half times that of the Earth, while its average density is only one-eighth of the Earth. However with its larger volume, Saturn is over 95 times more massive. Saturn is named after the Roman God of Wealth and Agriculture. Saturn's interior is most likely composed of a core of iron-nickel and rock (silicon and oxygen compounds). Its core is covered with a thick layer of metalic hydrogen, an intermediate layer of liquid hydrogen and liquid helium and finally a gaseous outer layer. In its upper atmosphere, Saturn has a pale yellow mark due to ammonia crystals present there. An electric current within the metallic hydrogen layer is thought to give rise to Saturn's planetary magnetic field, which is weaker than the Earth's, but which has a magnetic moment 580 times that of Earth due to Saturn's larger size. Saturn&#