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Gravity Index
Density is the mass of a unit volume of a substance.
It is a measure of how tightly atoms are packed together.
Inside massive astronomical bodies, densities are very high.
Table of Densities
| Densities of some common materials |
| Substance | Density (grams per cc) |
| Room air | 0.001 |
| Cork | 0.24 |
| Ice | 0.91 |
| Water | 1.00 |
| Aluminium | 2.7 |
| Titanium | 4.5 |
| Iron | 7.6 |
| Lead | 11.3 |
| Gold | 19.3 |
| Densities of some astronomical objects |
| Object | Density (grams per cc) |
| Saturn | 0.7 |
| Jupiter | 1.3 |
| Earth | 5.4 |
| Core of the Sun | 100,000 or 105 |
| White Dwarf | 100,000 or 105 |
| Neutron Star | 100,000,000,000,000 or 1014 |
| Black Hole | Infinite |
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