This article is from the series "The Solar System" where we will be sharing interesting facts about everything, from the origin of the Solar System to the mysterious massive planet 9. Please follow our social media accounts to get regular updates.
Billions of years ago, there was no Sun and there were no planets. All there was a big cloud full of gases. So, how it all turned into a balanced system of a star and planets orbiting around it? How a star and planetary bodies around it made it possible to have life? The story of the Solar System ( सौर मण्डल ).
Here are some interesting facts about our Solar System which will give you some insights on this series covering our planetary system:
The Local Interstellar Cloud (LIC) in Orion–Cygnus Arm, also known as the Local Fluff is roughly 30 light-years across
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As is typical of molecular clouds, this one consisted mostly of hydrogen, with some helium. It also had small amounts of heavier elements fused by previous generations of stars
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Within 50 million years, the pressure and density of hydrogen in the centre of the protostar became great enough for it to begin thermonuclear fusion
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Due to their higher boiling points, only metals and silicates could exist in solid form in the warm inner Solar System close to the Sun. These would eventually form the rocky planets of Mercury, Venus, Earth, and Mars
Appendix: protoplanetary disc, Accretion
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Leftover debris that never became planets gathered in regions such as the Asteroid belt, Kuiper belt and Oort cloud
Appendix: Protoplanets
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The count of the recognized dwarf planets in our solar system may increase in future
Appendix: minor planets
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The span of the Solar system is the distance from Sun to the outer boundary of the Oort cloud
Appendix: AU
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The Greek philosopher Aristarchus of Samos had speculated on a heliocentric reordering of the cosmos. Nicolaus Copernicus was the first to develop a mathematically predictive heliocentric system
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The categorization is based on the structure of the planet. Terrestrial planets are made up of solid rocky material and Jovian planets are made up of gasses and ice
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The terrestrial planets in the Solar System have few or no moons and no ring systems
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The four outer planets of the Solar System collectively make up 99% of the mass known to orbit the Sun
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If the Sun–Neptune distance in the Solar System is scaled to 100 metres, then the Sun would be about 3 cm in diameter. The giant planets would be all smaller than about 3 mm. Earth‘s diameter along with that of the other terrestrial planets would be smaller than a flea (0.3 mm) at this scale
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Mostly bodies found beyond Neptune are highly inclined to the ecliptic
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Beyond the Scattered Disc are a newly discovered population of Sednoids and a theoretical Oort cloud (Pronunciation: O-rt Cloud)
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New Horizons was launched in 2006 with the primary mission to perform a Flyby study of the Pluto, one of the Dwarf planets of Solar System. Its secondary mission is to fly by and study one or more other Kuiper belt objects (KBOs) in the decade to follow
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Source: Wikipedia
You can read the whole series ‘The Solar System‘
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