Encyclopedia > 40th century BC

Article Content

40th century BC

(40th century BC - 39th century BC - other centuries)

(5th millennium BC - 4th millennium BC - 3rd millennium BC)

Events:

City of Ur in Mesopotamia

Significant persons:

Inventions, Discoveries, Introductions:

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Chandrasekhar limit

... electron degeneracy pressure, which results in a stable white dwarf. If the star has a mass above the Chandrasekhar limit it has sufficient gravity to collapse past the ...