orbit

/Tag: orbit
19 08, 2017

Saturn – Planets – Astronomy

By |2018-05-31T11:49:18-07:00August 19th, 2017|Physics|0 Comments

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 [...]

19 08, 2017

What are planets? Astronomy – Space science

By |2018-09-10T17:46:23-07:00August 19th, 2017|Physics|0 Comments

What are planets? The planet Venus from space Before there were planets 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 [...]

19 08, 2017

The Moon – Astronomy – Physics

By |2018-05-31T11:49:27-07:00August 19th, 2017|Physics|0 Comments

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 [...]

18 08, 2017

Jupiter – Planets – Astronomy

By |2018-05-31T11:49:17-07:00August 18th, 2017|Physics|0 Comments

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 [...]

18 08, 2017

What is gravity? Physics

By |2019-03-01T04:44:58-07:00August 18th, 2017|Physics|0 Comments

What is gravity? The Moon orbiting Earth (taken from space) - NASA What does gravity do? 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 [...]

18 08, 2017

How old is the Earth? – Astronomy

By |2019-05-22T11:28:46-07:00August 18th, 2017|Physics|1 Comment

Earth from space: How old is the Earth? When did the Earth form? 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.) What's the sun made of? How do planets form? All our physics articles What [...]

17 08, 2017

Earth, Sun, Moon dance – Astronomy project

By |2019-05-01T05:21:41-07:00August 17th, 2017|Physics|0 Comments

An eclipse of the moon. You can see the curved shadow of the Earth. Watch an eclipse as an astronomy project! Dance the Earth and the Sun... 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, [...]

16 08, 2017

What is centrifugal force? Physics definitions

By |2019-03-11T05:58:01-07:00August 16th, 2017|Islam, Physics|0 Comments

Kids playing tetherball using centrifugal force Who first explained 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). Who was Ibn Sina? Medieval Islamic science All our physics articles An example of centrifugal [...]

16 08, 2017

What is a light-year? Physics definitions

By |2018-05-31T11:49:14-07:00August 16th, 2017|Physics|0 Comments

Light takes years to reach us from these stars far away in space. A light-year is the distance that light can travel in one year - that is, in the time it takes the planet Earth to make one full trip around the Sun. Light travels 186,000 miles in a second, so in [...]