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How long would it take a human currently on Earth to reach Ceres? Currently, we have no capability to even go back to the Moon, let alone any farther. A reasonable estimate would be 25 years from the time somebody decides to go back into space beyond Low Earth Orbit. The trip itself would take about 2.5 years, depending on the type of propulsion and the urgency of the mission.

The NASA space probe Dawn was launched in 2007 to study both Ceres and Vesta. Using very low-powered ion engines, Dawn arrived near Vesta in 2011, spent nearly 2 years orbiting Vesta, and arrived in Ceres orbit in early 2015.

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