{"id":989,"date":"2010-09-29T09:08:00","date_gmt":"2010-09-29T07:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_moon_the_earth_and_gravity\/"},"modified":"2026-10-08T00:34:34","modified_gmt":"2026-10-07T22:34:34","slug":"the_moon_the_earth_and_gravity","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/the_moon_the_earth_and_gravity\/","title":{"rendered":"A Hold, a F\u00f6ld \u00e9s a gravit\u00e1ci\u00f3"},"content":{"rendered":"
\n

What would happen if an aspiring villain, a scientist who\u2019s a little too old and deaf, and a group of clumsy and spiteful assistants ventured into the construction of rockets and anti-gravitational weapons? You can find out in Despicable Me, Universal Pictures\u2019 3D animated feature coming out in cinemas on 15 October. In the film, our odd heroes struggle with the Moon, its mass, and the force of gravity.<\/p>\n<\/div>\n

So let\u2019s just have a little talk about these key concepts in order to understand better what happens in the film. Have you ever seen a fruit or object falling from a tree? And have you ever tried to throw a stone and watch it fall? This force that \u2018brings down\u2019 things is called the force of gravity.<\/p>\n

\"Gru\"
Gru<\/figcaption><\/figure>\n

We are constantly attracted to the Earth by its gravitational force , That is the reason why we always keep our feet on the ground. We don\u2019t need to be in direct contact with Earth to be attracted by it however; not being too far away is just enough for the same forces to act. This is why our own planet orbits around the Sun, and the Moon orbits around the Earth.<\/p>\n

A gravit\u00e1ci\u00f3s er\u0151t a test t\u00f6mege hat\u00e1rozza meg. K\u00e9t test k\u00f6z\u00f6tti gravit\u00e1ci\u00f3s er\u0151 ar\u00e1nyos a testek t\u00f6meg\u00e9vel, \u00e9s nagyon gyorsan cs\u00f6kken, amint elv\u00e1lasztjuk \u0151ket egym\u00e1st\u00f3l. Val\u00f3j\u00e1ban mi is vonzzuk a testeket a \u2018saj\u00e1t\u2019 gravit\u00e1ci\u00f3s er\u0151nkkel, de t\u00fal k\u00f6nny\u0171ek vagyunk ahhoz, hogy \u00e9szrevegy\u00fck a hat\u00e1s\u00e1t! A Nap viszont olyan nagy, hogy m\u00e9g akkor is k\u00f6zel tart minket mag\u00e1hoz, amikor olyan messze van. A Hold is kifejti gravit\u00e1ci\u00f3s erej\u00e9t; mivel kisebb \u00e9s k\u00f6nnyebb, mint a F\u00f6ld, ha ott m\u00e9rlegelhetn\u00e9nk magunkat, kider\u00fclne, hogy a F\u00f6ld\u00f6n m\u00e9rt s\u00falyunk k\u00f6r\u00fclbel\u00fcl egyhatod\u00e1t nyomn\u00e1nk.<\/p>\n

\"\"<\/figure>\n

Felmer\u00fclhet a k\u00e9rd\u00e9s, hogy mi\u00e9rt nem esik le a Hold a F\u00f6ldre \u00fagy, mint egy alma a f\u00e1r\u00f3l. Az ok az, hogy a Hold soha nem \u00e1ll mozdulatlanul. Folyamatosan kering k\u00f6r\u00fcl\u00f6tt\u00fcnk. A F\u00f6ld gravit\u00e1ci\u00f3s ereje n\u00e9lk\u00fcl egyszer\u0171en elsz\u00e1llna az \u0171rbe. A sebess\u00e9g \u00e9s a F\u00f6ldt\u0151l val\u00f3 t\u00e1vols\u00e1g ezen kombin\u00e1ci\u00f3ja teszi lehet\u0151v\u00e9, hogy a Hold mindig egyens\u00falyban legyen a zuhan\u00e1s \u00e9s a kil\u00e9p\u00e9s k\u00f6z\u00f6tt. Ha gyorsabb lenne, elsz\u00e1llna; ha lassabb lenne, lezuhanna!<\/p>\n

We said the force of gravity depends on distance too. If we were to distance ourselves enough, we could escape its hold. That\u2019s what we try to do with spacecraft. We need to reach and exceed the so-called \u2018escape velocity\u2019, that is about 11.2 km\/s (at such velocity, we would be able to move from London to New York in just ten minutes!). Once a shuttle reaches this velocity, it is free to travel in the Solar System.<\/p>\n

\"Minions\"
Minions<\/figcaption><\/figure>\n

Inside an orbiting shuttle we do not feel the gravitational force of the Earth. Objects don\u2019t fall, they float; if you jump up, you don\u2019t come back down. A similar thing also happens to astronauts when they are in space stations orbiting the Earth.<\/p>\n

In Despicable Me you will see rockets flying and the effects of gravity on the Moon. Gru has a group of assistants called Minions who will help him in his quest to steal the Moon and become the most famous villain in the world. We hope you enjoy the film!<\/p>\n