SUN The sun is the largest thing in our solar system. The only reason the sun keeps burning is through the process of thermonuclear fusion, which is the process of turning hydrogen nuclei into helium. On the sun’s surface, it is approximately 5500°C This star is made up of mostly hydrogen and it is the closest star to earth. This is why they emit light. Since they create energy, it is then made into heat which then comes light. With all these elements, it keeps our earth healthy. It is in the center of our solar system and is around 150 000 000 kilometers away from earth. The enormous sun accounts for 99.86% of our solar systems total mass. This great mass is 1,989,100,000,000,000,000,000,000,000,000 metric kilograms. The sun was formed by a large solar nebula some 4,.7 billion years ago. This grand star has been burning for quite a long time and doesn’t show signs of burning out. Some astrologists say it will keep burning for another 8 billion years. The scorching heat of this superb star would melt anyone and anything that comes too close. MOON The moon is earth’s only moon. The moon, also referred to as a natural satellite, has a wide range of temperatures. It could be anywhere from -180°C in the nighttime to 150°C during the day. The temperature certainly varies, depending on the day. It usually consists of hot days and cold nights The moon orbits the earth on the same side of it always facing us. It completes a full orbit around us in about 27.3 days. The moon doesn’t really have an atmosphere. It is more of an exosphere, which is further away from the planet than an atmosphere and an exosphere is quite weaker. This moon is the 5th largest moon in our solar system. It has a rocky landscape full of craters. Their craters were formed by comets and asteroids crashing into the moon. On the moon, there is very weak gravity and there is no air, water or living creatures. The moon keeps Earth rotating steadily. Without the moon, earth would be out of control, spinning all over the place. Another thing is that the moon has 8 phases: New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, Waning Crescent. The moon doesn’t actually emit light, even though it may look like it. The moon actually reflects the sun’s light towards our planet. That is why it seems like it emits, even though it reflects. Next time you come across the topic of the moon, think about how important it really is. Comet A comet is a small celestial body, found in space. Comets, like planets, orbit the sun. It is said that comets are formed in a place called the Kuiper Belt which is located far past Pluto. Comets are usually made up of frozen ammonia, methane, water, or dust and rocks. There can also be situations where the water freezes and it becomes ice. Comets have four main components: The Nucleus, Coma, Ion Tail, Dust tail. The part that is most visible is the dust tail, the part that trails behind the comet. A comet’s power source is the sun. This happens because comets are so light and the planets pull the comet due to their gravity. Comets reflect light because they are made partly of ice. They only reflect 4% of the light that falls upon them. The rest of the light is absorbed by the comet, causing it to melt. This is why each time they get closer to the sun, the lose mass. Comets are quite similar to asteroids. They travel at average 40 km an hour. The average “lifespan” For a comet is about 10,000 years Comets are an extraordinary sight to see. They shimmer wonderfully through the night sky.