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Saturn – Planets – Astronomy

By | 2017-08-19T01:37:41+00:00 August 19th, 2017|Physics|

Saturn, as seen from space After Jupiter, Saturn is the next farthest planet out from our Sun. In some ways, Saturn is a lot like Jupiter - it's very cold, and it's mostly made of an ocean of hydrogen molecules, with some helium and a little bit of other things. Like Jupiter and the other planets around our Sun, Saturn [...]

What are planets? Astronomy – Space science

By | 2017-08-19T01:34:27+00:00 August 19th, 2017|Physics|

The planet Venus from space For several hundred million years after the Big Bang, there were no planets, only stars. Planets couldn't form until the first stars ran out of fuel and exploded into supernovas, about 14 billion years ago. The supernovas spewed out thousands of tons of carbon, oxygen, iron and other elements into space. Planets are made out of the recycled atoms [...]

The Moon – Astronomy – Physics

By | 2017-08-19T01:10:14+00:00 August 19th, 2017|Physics|

Earth's moon (about 239,000 miles from Earth) (That's almost ten times as far as going all the way around the Earth) Nobody knows exactly how the moon formed, but this is one possibility. After the planet Earth formed (along with the other planets), about four and a half billion years ago, during the Hadean Eon, there were [...]

Jupiter – Planets – Astronomy

By | 2017-08-18T17:46:33+00:00 August 18th, 2017|Physics|

Jupiter from space Jupiter (named after the Roman god Jupiter) is the next planet further out from our Sun after Mars. But Jupiter is much, much further away from the Sun than Mars is. If the Sun were the size of a penny, then Earth would be about six feet away from the Sun. And Mars would be about ten [...]

What is gravity? Physics

By | 2017-10-16T12:38:57+00:00 August 18th, 2017|Physics|

The Moon orbiting Earth (taken from space) - NASA Gravity attracts all objects towards each other. Gravity has been around since the very beginning of the universe, and it works the same way everywhere in the universe, on all kinds of different objects, of all different sizes (larger than atoms - those are held together by atomic [...]

How old is the Earth? – Astronomy

By | 2017-10-17T13:03:27+00:00 August 18th, 2017|Physics|

Earth from space Like Mercury and Venus and the other planets that go around the Sun, the Earth probably formed a little more than four and a half billion years ago. (That's about 4,600,000,000 years ago.) Like the other planets, Earth is made of molecules that were floating around in space. They made a nebula cloud of dust that was the leftovers when our [...]

Earth, Sun, Moon dance – Astronomy project

By | 2017-08-17T22:50:36+00:00 August 17th, 2017|Physics|

An eclipse of the moon. You can see the curved shadow of the Earth. To get a better idea of how the Earth moves around the Sun, work in groups of three people. One person is the Sun and stands in the middle, just standing still. The second person is the Earth, and slowly walks in [...]

What is centrifugal force? Physics definitions

By | 2017-08-16T18:34:11+00:00 August 16th, 2017|Islam, Physics|

Kids playing tetherball using centrifugal force When something is going straight, it always keeps going straight unless something else stops it or turns it. (The Iranian scientist Ibn Sina figured this out about 1000 AD). If it can't go straight, then it goes as straight as it can. So when you hit a tetherball, it [...]