Survey
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* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Hello people of Erasmus! How are you? I’m really pleased to meet you all here, in Slovenia! My name is Earth. Planet Earth. I’ve come here to introduce my family. We are Planet Family. We live in a place named Solar System, which is a small part of Milky Way galaxy. I have 8 siblings named: Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. There is a strong force who keeps us together around our friend, Sun, the G2 star. This force is named Gravity. Because of Gravity, if you drop something, it falls down, instead of up. Well, everybody knows that! But, what does this really mean? What is gravity? My friend, Isaac Newton discovered gravity and he could explain it for us, here! --video newton******** Thanks, Isaac Newton! So, gravity has played a big part in making the universe the way it is. Gravity is what makes pieces of matter clump together into planets, moons, and stars. Gravity is what makes the planets orbit the stars-like I, Earth, orbit our star, the Sun. Gravity is what makes the stars clump together in huge, swirling galaxies. A great scientist, Albert Einstein, who lived in the 20th century, had a new idea about gravity. He thought that gravity is what happens when space itself is curved or warped around a mass, such as a star or a planet. That’s why, we, the planet and other celestial objects, we are rotating and revolving. Look, my brother, Mercury is here! Hello Mercury! Please tell our friends something about you! (Mercury): Hello people! I am Mercury! I am the closest planet to the Sun. I am named after Mercury, the Roman god. He is the patron god of financial gain, commerce, eloquence and poetry, messages and communication, is the god of travelers, the god of luck, trickery and thieves; he is also the guide of souls to the underworld. (Earth): Yep, yep! Mercury makes one complete revolution around the sun in 88 Earth days. A year on Mercury last only 88 Earth days. Regarding rotation around its axis (on Mercury), it is very slow. A day on Mercury lasts 176 Earth days. Because it is so close to the Sun, Mercury's temperature reaches 467 Celsius degrees during the day, and drops to minus 183 Celsius degrees overnight. In April 2008 scientists found a crater on Mercury named after the most important Romanian poet, Mihai Eminescu. The crater is 125 kilometers in diameter. (Mercury): Still, I am tiny, tiny, like Earth’s Moon. (Mercury): Hey! Look who’s there! Venus, come here, girl! (Venus): Hi, guys! How’s everything? Ohh, look how many humans are watching us! (Earth): Yeah, they are Erasmus people. (Venus): what are they doing here? (Earth): They are learning about us, The Planet’s Family. (Venus): Well? Let's start! I am the second planet from the Sun and the second brightest object in the night sky after the Moon. I am named after the Roman goddess of love and beauty and I am the second largest terrestrial planet. I’m sometimes referred to as the Earth’s sister planet due our similar size and mass. My surface is obscured by an opaque layer of clouds made up of sulfuric acid. A Venusian year last 225 terrestrial days, and a Venusian day last 243 Earth's days. WaaaaW! (Earth): Whoaaa, what a presentation! Thanks sys! (Venus): Welcome darling! I have to go now! Bye-bye Erasmus people, it was a pleasure to talk with you. See you on the sky! (Earth): Mars? Where are you? You're next! (Mars): Mars is here! Did you know I am the fourth planet from the Sun? I am named after the Roman god of war, and often described as the “Red Planet” due to my reddish appearance. I am a terrestrial planet with a thin atmosphere composed primarily of carbon dioxide. I take my name from the Roman god of war. Earth and I, we have approximately the same landmass. I am home to the tallest mountain in the solar system, I’ve got the largest dust storms in the solar system and from here, and the Sun appears about half the size as it does on Earth. (Earth): ok! Tell us Mars, tell us about your friends! (Mars): eh! They are here! Phobos! And Deimos! They are my satellites! Phobos? Deimos? Guys? They are around me all day and all night! So we are best friends! (Jupiter): What’s up, guys? (Mars): Hey, Jupiter! What’s up bro? Tell those people a couple of words about you! (Jupiter): OK! So! My name is Jupiter! Jupiter is the King of the gods; therefore, I am the king of the planets! My composition is similar to a star: 90% hydrogen and 10% helium. That's why I am so big, because I have gases. Under my clouds I have water. Frequently I am crossed by giant storms. Sometimes, those storms lasts for years, the longest known by you, humans, is named the Great Red Spot, a storm discovered 300 years ago. I have a solid core made from frozen rocks. This core is big as Earth. A year on Jupiter last 11.8 terrestrial years. I have 3 rings and over 60 satellites. Now, I have to move on! Good bye! (Earth): Bye j! Saturn, come here boy, don't be shy! (Saturn): Hey! Good day humans! Good day, planets! How are you? (Saturn): My name is Saturn! I am the sixth planet from the Sun and the second largest in the solar system, after my brother, Jupiter. I am a gas giant! I am named after the Roman god, Saturnus, the equivalent of the Greek god Kronos. Inside me, I have a core of rock and ice, surrounded by a thick layer of metallic hydrogen and a gaseous outer layer. Everyone recognizes me by my rings! Like Jupiter, I have over 60 satellites around me! Titan is my largest moon and is the second largest satellite in the Solar System, after Ganymede, Jupiter's satellite. Titan is larger than the planet Mercury. (Earth): Your moon, Titan, is larger than our brother, planet Mercury! (Saturn): Indeed. I’ll pass the microphone to Uranus. (Uranus): Well, kids, I am the seventh planet from the Sun. I’m not visible to the naked eye, and I became the first planet discovered with the use of a telescope. I am tipped over on my side with an axial tilt of 98 degrees. I’m often described as “rolling around the Sun on its side.” I was officially discovered by Sir William Herschel in 1781. The Greek god Uranus was the primal Greek god personifying the sky. Ha! Where is Neptune? (Neptune): Here I am, Uranus! Kids, I am the eighth planet from the Sun making me the most distant in the solar system. I am named after the Roman god, Neptune, the god of sea and freshwater. I may have formed much closer to the Sun in early solar system history, before migrating to my present position. I wasn’t known to the ancients. I spin on my axis very rapidly, I am the smallest of the ice giants and my atmosphere is made of hydrogen and helium, with some methane. One Neptunian year has 165 terrestrial years, and a Neptunian day has only 16 hours. I have five rings and 13 satellites. (Pluto)> And I, I am Pluto! Humans told me I am not a Planet. But I know I could be everything if I want to. Discovered in 1930, I am the second closest dwarf planet to the Sun and I was at one point classified as the ninth planet. I am the largest dwarf planet but only the second most massive, with Eris being the most massive. I am named after the Greek God of the underworld. I was discovered on February 18th, 1930 by the Lowell Observatory. I’ve got five known moons: Charon, Hydra, Nix, Kerberos and Styx. I am 1/3 water. (Earth): Silence, planets! Let me remind you who I am! I’m the third planet from the Sun and the largest of the terrestrial planets. I’m the only planet in our solar system not to be named after a Greek or Roman deity. I was formed approximately 4.54 billion years ago and I’m the only known planet to support life. My rotation is gradually slowing. I was once believed to be the center of the universe. The first astronomer who discovered that Earth is a planet, was Nicolaus Copernicus. I have one satellite named Moon. I play a lot with Moon. We are rotating around Sun. It is funny! This is my family! We all are rotating around Sun. Everything is just perfect here, in Solar System Greetings from Milkyway! Goodbye!