Astronauts could complete a round trip to Mars in less than a year someday, potentially cutting current mission timelines in half, according to a new study that drew inspiration from asteroid trajectories.
Under current mission profiles, reaching Mars, which is located about 50% farther from the sun than Earth is, takes roughly seven to 10 months. Because Earth and Mars align for fuel-efficient transfers only every 26 months, astronauts must wait for a return window, stretching a full round trip to nearly three years.
However, the new findings, published online in the journal Acta Astronautica in April, suggest that early, imprecise orbital estimates of near-Earth asteroids — which were historically used to assess impact risks, before being discarded in favor of more precise data — may contain valuable geometric clues for designing faster interplanetary routes.
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