Size:
1.0MB
Requirements:
No special requirements
No special requirements
Price:
Free
Free
System:
Windows 8/7/Vista/XP
Windows 8/7/Vista/XP
Rating:
4.2
4.2
License:
Freeware
Freeware
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Description - Galactic Gravitation
Appreciate why astronomers think that 90% of the matter in our galaxy is invisible
The Galactic Gravitation application was developed to be a small tool that allows you to appreciate why astronomers think that 90% of the matter in our galaxy is invisible.
It is well known that in the solar system the outer planets not only take longer to orbit the Sun than the inner planets, they also travel at a slower speed. This is an immediate consequence of the FACT that nearly all the mass of the solar system is concentrated in the Sun itself.
The gravitational field strength g at a distance R from the Sun is given by Newton`s law of gravity:
The Galactic Gravitation application was developed to be a small tool that allows you to appreciate why astronomers think that 90% of the matter in our galaxy is invisible.
It is well known that in the solar system the outer planets not only take longer to orbit the Sun than the inner planets, they also travel at a slower speed. This is an immediate consequence of the FACT that nearly all the mass of the solar system is concentrated in the Sun itself.
The gravitational field strength g at a distance R from the Sun is given by Newton`s law of gravity:
