Asteroids are divided into different groups such as Apollo, Aten, or Amor, based on the type of orbit they have.

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Some space experts have said that any manned Mars mission using existing rockets probably would need to have a capsule dock with some type of booster in orbit.

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The second piece of evidence pointing to is the eccentric orbit of an existing planet around the star, which is in an orbit not normally expected in this type of system.

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