Mercury is the closest planet to the sun in our solar system. It revolves faster arpund the sun than other planets. Due to its closeness, Mercury is blasted by the Sun's rays. It has only a very small atmosphere. The temperature of Mercury at day time is 400°C and -170°C at night time. Mercury was the son of the king of the gods Jupiter and purportedly Maia goddess of the plain. Considered by some to be foreign origin, he is often associated with his Greek counterpart Hermes . It has no natural satellites of its own. The only man-made satellite that have visited there is Mariner 10 in 1976.
The Sun is the largest object in the Solar System. It contains approximately 98% of the total mass of the Solar system mass. The Sun appears to have been active for about 4.6 billion years, and has enough fuel to go on for another 5 billion years or so. Parts of the Sun : ●Solar core: It has temperature of about 14 million °C. ● Photosphere: It is about 340 miles thick and temperatures range from 5500°C to 6000°C. It is made of churning gases. ● Corona: It is the outer most layer of the Sun, and is only visible during solar eclipse ● Solar Flare: Explosions can reach a maximum speed of 900 km/s and are more violent and spectacular. EXTRA KNOWLEDGE 1. The sun blows a constant stream of invisible particles out into space in all the directions known as solar wind. 2. The Solar and Heliospheric Observatory (SOHO) weighs about two tons and with its solar panels extended it stands about 25 feet across. The spacecraft has 12 scientific instrumen...