Classical antiquity
Seven deadly sins
Seven Classical planets ("7 Luminaries")
Seven Metals of antiquity
Seven Heavens
Seven days in the week
Seven colors in the rainbow
Seven Seas
Seven Continents
Seven against Thebes
Seven Kings of Rome
Seven hills of Istanbul
Seven hills of Rome
Seven hills of Sheffield
Seven Liberal Arts
Seven Sages of the Bamboo Grove in China
Seven Sages of Greece
Saptarishi – Seven Sages concept in Ancient India
Seven Wise Masters, a cycle of medieval stories
Seven Wonders of the ancient world
7 was considered a God number in ancient Egypt. The Pharaoh usually ordered things in groups of multiples of 7. For a time, 7 was not even used in writings for the people of Egypt.[2]
7 pure notes in the diatonic scale
Seven is also the number you would give Earth if one were to count from the outside of the solar system to the inside, as any celestial traveler from beyond our solar system would do as they approach our planet.
? Pluto, the First
? Neptune, the Second
? Uranus, the Third
?Saturn, the Fourth
?Jupiter, the Fifth
? Mars, the Sixth
? Earth, the Seventh
Rather odd then that scientists would suddenly decide Pluto isn't a planet, reducing that count from 7 to 6. Their arbitrary reasons for making this decision were unconvincing. The more likely explanation is a deliberate change in symbolism of Earth.
yeah i always wondered why they demoted pluto