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Why are the outer planets less dense?
They are made of less dense materials. While the inner planets are made primarily of rock, the outer planets are made mostly of hydrogen and helium.
In what ways are the moons stars and planets interrelated?
Moons are natural satellites that orbit planets, planets orbit stars like our Sun, and stars are part of galaxies that contain planets and moons. Moons are gravitationally bound to planets while planets are gravitationally bound to stars. All three are part of the same interconnected celestial system.
What are the planets made of gas called?
There are four planets that are made out of gas: Jupiter, Saturn, Urans and Neptune. These planets are called the "gas giants" . The other four planets (Earth, Mercury, Venus and Mars) are mostly made out of rock.
When did sun and planets form?
The sun and planets formed around 4.6 billion years ago from a rotating cloud of gas and dust called the solar nebula. As the nebula collapsed due to gravity, it started to flatten into a disk shape, with the sun forming at the center and the planets coalescing from the leftover material in the disk.
How are outer planets different from smaller planets?
They are bigger because the Outer Planets had less gas and dust taken away from them when the solar system was forming. The Inner planets were closer to the sun, so the sun took more gas and dust away from those bodies, but didn't take away from the Outer bodies.
How Long ago were the ancient babylonians of the planets and stars?
A long Time ago
How long ago was sushi made?
It was made in 1946. So, not that long ago...
How long ago were the ancient Babylonians charting of the planets and stars?
The ancient Babylonians were creating star catalogs and observing the planets as early as the 8th century BCE, so it was over 2,700 years ago. They developed a sophisticated system of astronomy that influenced later civilizations.
How many planets where a long time ago?
The planets in our solar system formed our of the solar nebular/disk from which the Sun was made (as the Sun formed), some 4,600 million years ago. Therefore there have always been roughly the same number of planets as we have now. However, our solar system could have lost one or more of the original planets that were formed as the planets settled into their current positions. As part of the settling process, orbital resonances can cause planets to interact with each other gravitationally and planets can be ejected from the forming solar system. If this did happen, then we do not how may planets there were originally.
What are the objects made by people long ago called?
Things made by humans long ago are called Artifacts.
How long ago was Antarctica made?
I think it was made 170 million years ago
How long ago was japan made?
20 years ago
How long ago was the pyramids made?
4,600 years ago....
How long ago was clubpenguin made?
it was made in 2005.
When was sports made?
it was made a long time ago
How long ago was the first pyramid made?
4,600 years ago....
How long ago was pi made?
it was made in 2000 BC
