Category: Solar System

Our Planetary System: The Sun

The centre part of the solar system is occupied by Sol or Sun. It is completely responsible for the weather and climate of the Earth. It is actually a perfect sphere and has a difference of about ten kilometres in diameter among the equator and the poles. The standard radius of our Sun is 695,508 km, out of which twenty to twenty five percent is the core. The age of the Sun is 4.6 billion years. It comes under yellow dwarf type. The mass of the Sun is 333,060 times the Earth. The surface temperate of the Sun is 5500 degree Celsius.

It is said that one million Earth has chance to accommodate the Sun. If the hollow Sun could accommodate spherical Earths, then it could hold around 960,000 Earths inside. The surface area of the Sun is 11,990 times compared to the Earth. There are chances for the Sun to consume the Earth. If all the hydrogen is burnt, the Sun will burn helium for another one hundred and thirty million years. During that point, it will start to expand and engulf the Earth, the Venus, and the Mercury. In that stage, the Sun will become a red fat giant.

At one point, the Sun has chances to get back to the size of our Earth. When it crosses the red giant stage, the Sun will tend to collapse, and retains its enormous mass. It will contain the equal or appropriate volume of our Earth. When this situation occurs, the Sun will be referred as a white dwarf. It contains 99.86% of mass present in the whole solar system. It contains three quarters of Hydrogen, and the remaining is Helium. It takes about eight minutes for the Sun light to reach our Earth considering the distance between the Earth and the Sun.

Read Also Interesting information about Ceres – A Dwarf Planet

Facts About the Asteroid Belt


A majority of asteroids is easily found beyond the Mars. The Asteroid belt is formed when they join. Hygiea, Pallas, Vesta, and Ceres are the four largest asteroids. Due to gravitational interactions, some asteroids orbit to nearby Earth space and some migrate or move away from the solar system. The four large asteroids contain more than half the mass. The remaining mass is constituted by myriad smaller bodies. Once a theory was stated regarding the asteroid belt. As per the same, if asteroids are combined, then it can make up a missing planet ‘fifth rocky planet’.

Do you know the location of the asteroid belt? It is located in the space between the Jupiter and Mars. The place is said to be located at the distance of 2.2 and 3.2 AU (astronomical units) from the Sun. The asteroid belt is about one astronomical unit thick. In an average, the distance between objects is quite large. When you stand on the asteroid belt and see the other one, you will find the other one at a far distance place. The objects of the asteroid belt are made up of stone and rock. Some of the objects are solid objects, and most of them consist of orbiting rubble piles.

There are billions of asteroids in the asteroid belt. Some of the asteroids remain large in size. But there are also asteroids in a small pebble like sizes. It is said that there should be at least known 7000 asteroids. The discoverers suggest names to the asteroids, and they also give a number to the found asteroids. There are chances for the asteroids to move away from the belt due to the gravitational influences. The asteroid belt can also be referred as the main belt. It remains unique from other groups like Centaurs and Lagrangians. There are several objects in the asteroid belt, and they are spread over a large area of space.

Interesting Facts about the Meteorite

Each day, countless tons of space substance is showered on the Earth. The majority of the objects get vaporized in the atmosphere, and some larger pieces fall on the ground. Do you know where the objects actually come from? Well, such objects come from the asteroids. The objects could be different kinds of rocks. These would have existed since the dawn of solar system.

The Meteoroid is those small metallic chunks or rocky materials that come through space. It will be in size of the dust. The small meteoroids are also known as space dust or micrometeoroids. Such fragments could also due to the collisions between the solar system bodies like Mars or the Moon or could be remaining comet debris. In our Earth’s history, several meteorites both small and large in size have reached our Earth surface. Some of the famous meteorites are Hoba, the Fukang, the Williamette Meteorite and the Allende.

The Fukang Meteorite comes under the stony iron meteorite type. It is the best example of pallasite. It has large gem similar to olivine crystals, and the peace of such meteorite is very popular among collectors. It has a good demand among people who collect such meteorites.

The Hoba Meteorite is seen in Africa. It is found in Namibia. The size of the Hoba Meteorite is very large. It will be about sixty tonne rock size. It is impossible to move. The Hoba Meteorite is preserved as a National Memorial in Namibia. The experts say that fell around 80,000 years ago.