Aphelion
This is called perihelion.
perihelion
The distance from surface to surface through the center of a planet would be that planet's "diameter".
Apogee is the farthest distance between the moon (or a satellite) in its orbit around earth.
Aphelion is the point in a planet's or comet's orbit where it is farthest from the Sun. The Earth's aphelion is 152,098,232 km.
"Farthest" and "furthest" are different forms of the same word, depending on dialect or personal preference. Some prefer "farthest" in American English, while others prefer "furthest" in British English. Both words are used to describe the greatest distance or degree.
Ecological diversity could be a term used to describe the planet's natural variety.
The positive form of the word "further" is "further" itself. The superlative form is "furthermost" or "farthest," depending on the context. "Further" is often used in abstract contexts, while "farthest" typically refers to physical distance.
"Farthest" is the correct word. "Fartherest" is not a word.
Earth. It looks blue from a distance
No, it is not a preposition. The word away is an adverb.
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