Assertion: celestial sphere | /r/HasProperty | centered at the earth's center
Facets:
Source sentences:
text: The celestial sphere can be considered to be centered at the Earth's center, the Sun's center, or any other convenient location, and offsets from positions referred to these centers can be calculated.
text: The celestial sphere can be considered to be centered at the Earth’s center, The Sun’s center, or any other convenient location, and offsets from positions referred to these centers can be calculated.