00:00have you ever wondered what the earth is floating on or why does the earth always go around the sun
00:08if you're curious about these things watch this video i'll explain it clearly look at the
00:16animation you can see the earth moving around the sun the earth spins around itself that's why we
00:23have day and night at the same time the earth is also moving around the sun that's why we have a
00:30year these two movements are called spinning rotation and going around the sun orbit all the
00:38planets do this because the sun's gravity is pulling on them here's the answer the sun's gravity
00:45is powerful kind of like a giant magnet it pulls on the earth and keeps it moving around the sun
00:51in a big circle think of space like a big blanket and the sun is like a heavy ball sitting on it
00:58the ball makes a dent in the blanket and the planets roll around in this dent this is what
01:04scientists call gravity and it works because of something called space-time a kind of invisible
01:10fabric a smart scientist named einstein explained this idea called general relativity to help us
01:18understand how gravity works in space now imagine space as a vast empty expanse nothing beneath the
01:26earth so what keeps the earth from flying away why doesn't it just fall into the sun that's a really
01:34interesting question if gravity pulls earth toward the sun why doesn't earth crash into it and if it's not
01:42gravity then what is holding earth in space earth spins around its axis which is like it turning in
01:49place while also moving around the sun that's why earth stays in its path and doesn't drift away
01:57the same thing happens with satellites they go around earth because earth's gravity keeps them close
02:04imagine space is like a big trampoline when something heavy like the sun sits on the trampoline
02:11it makes a dip or bend in the surface this bend is like a curve in space the earth is like a ball
02:18rolling near that dip because of the dip the earth starts moving around the sun almost like it's
02:25orbiting or going in a circle the sun is really big and round and it pulls on the earth with something
02:31called gravity this pull keeps the earth close to the sun so it doesn't fly away into space that's why
02:39earth goes around the sun because the sun's gravity pulls it in a curved path the force of gravity and
02:46the curvature of space around large objects like the sun and earth keep everything in place and moving in
02:52circular orbits let me know if you already knew this stuff and if you like the explanation tell your
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