Next…………… What’s In Our Solar System The Sun, the Moon and the Stars By Lina The Moon The earths moon is one of approximately 170 moons in our solar system. It is a quarter of earth’s size. •Size and temperature •On the Moon What is the temperature of the Moon? The moon’s temperature varies from -233 Celsius (387 Fahrenheit) at night, and during the day it goes to 123 Celsius (253 Fahrenheit). How Big is the Moon? The orbit of the moon is 384,400 km from earth. The diameter is 3,476 km and the mass is 7.35e22 kg. Has anyone landed on the Moon? Someone has landed on the moon.12 astronauts have so far. The first to land on it were Neil Armstrong and Edwin Aldrin, and the last were Eugene Cernan and Harrison H. Schmitt. How Long has someone stayed on the Moon for ?: Longest time people have stayed on the Moon. The record for the longest moonwalk on the moon session was made by NASA astronaut, Edgar Mitchell and was 9 hours and 17 minutes long. What was the longest time spent on the Moon? The longest time spent out on the Lunar surfaces (the moon) is more than 22 hours. This record was made by Apollo 17, (the Apollo astronauts) who were Gene Cernan and Harrison Schimdt. They also traversed the greatest Module and they also collected the largest amount of Lunar Rocks which was more than 120 kg. The Sun •Our sun is a star and is one of more than 100 billion stars in our galaxy. Size and temperature How Close Is it Getting Hotter How big is the sun and what’s the temperature of it? The diameter of the sun is 1,390,000 km. The mass is 1.989e30 and the temperature is 5,800 k for the surface, and 15,600,000 k for the core. How close can you get to the sun before you burn? The closest you can get to the sun is Mercury, but it has not been found how much closer you can get. Can the sun get hotter every year? Studies say the sun is getting hotter, it is to be thought to be warming up from greenhouse gases, adding heat to the earth. The Stars Formation Closest Star Temperature Shooting Star •There are more than 100 billion stars in our galaxy, including our sun. Each star is a enormous glowing ball of gas. Formation How are stars formed? Every star is an enormous glowing ball of gas in the sky, and a medium size star is our sun. Stars can live for billions of years, and when an enormous cloud of hydrogen gas collapse until it is hot enough to burn nuclear fuel is when a star is born, Eventually, a star blows up when the nuclear fuel runs out (in about 5 billion years). Then the star expands and the core contracts, the star becoming giant, then it explodes, and a dim cool object it turns into. Closest Star What is the closest star? The sun is the closest star to us, but if we don’t include it, the closest star is Proxima Centauri, aka Alpha Centauri C. It is 4.3 light years from the sun. What’s the temperature of a star? The temperature of the surface of the hottest star is 100,000 degrees Fahrenheit. Our sun is 10,000 degrees Fahrenheit. The temperature of a stars core is 200,000,000 degrees inside and the suns around 25,000,000 degrees inside. What is a shooting star? Mostly grit from space colliding at every high speed, shooting stars are, with air molecules high up in the sky. So now you know a bit about the moon, the sun and the stars. I hope you learned a lot, but the one question is, you know how the sun is a star, what will happen when it blows up???????????? • http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/moontemp.shtml • http://www.nineplanets.org/luna.html • http://www.nineplanets.org/sol.html • http://www.enchantedlearning.com/subjects/astronomy/stars/ • http://wiki.answers.com/Q/How_many_astronauts_have_landed_on_the_moon_so_far • http://wiki.answers.com/Q/What_is_the_longest_time_people_have_been_on_the_moon • http://wiki.answers.com/Q/What_was_the_longest_time_spent_on_the_Moon • http://wiki.answers.com/Q/How_close_can_you_get_to_the_sun • http://www.lubbockonline.com/news/092897/study.htm • http://www.space.com/scienceastronomy/astronomy/showers_andstars_000809.html • http://spaceplace.nasa.gov/en/kids/phonedrmarc/2005_may.shtml#hot • http://wiki.answers.com/Q/What_is_the_temperature_of_the_sun's_center Thanks for watching my slide show. I hope you enjoyed it By Lina