This dimension names the body a spacecraft orbits, whether Earth, another planet or the Sun. Wikipedia defines an orbit as "the curved trajectory of an object under the influence of an attracting force," the same physics that keeps an artificial satellite circling its target body. Browsing this way collects every spacecraft that orbits the same body.
Facts
Comparison
Field Origin Era Orbits
Sources
1. Wikipedia: Luna 1
Wikimedia FoundationLuna 1, lead sectionQuote, Luna 1, lead section
was the first spacecraft to reach the vicinity of Earth's Moon, the first spacecraft to leave Earth's orbit, and the first to be placed in heliocentric orbit.
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