The 12 spacecraft sent to or sent past Mars have taken between 128 to 333 days from Earth, as of January 2015. Travel between Earth and Mars varies significantly and depends largely on the positions of the planets in relation to each other as well as the spacecraft propulsion system.
NASA's New Horizons probe is the fastest spacecraft launched from Earth as of January 2015. It traveled at 36,000 miles per hour when it was launched in 2006. If it had traveled to Mars during the closest approach to Earth, it could have arrived in as little as 39 days.
Generally, after a Mars-bound craft is launched, it detaches from the weighty launch vehicle and achieves maximum velocity soon after. A rocket motor and attitude jets provide course correction for the craft as it travels.Learn More
As of 2006, spacecraft originating on Earth can reach Jupiter in 13 months. The effective time that it takes to send objects from Earth to Jupiter continues to decrease with technological improvements.Full Answer >
The exact amount of time it would take to travel from Earth to Uranus will depend on the type of travel, the speed of travel and the path chosen. For example, it took the Voyager 2 spacecraft about 9 years to travel near Uranus in 1986.Full Answer >
The Apollo 11 space mission, commanded by Neil Armstrong, took three days, three hours and 49 minutes to reach the moon after launching from Earth. However, Armstrong did not set foot on the moon for more than six hours after landing.Full Answer >
Humans have never been to Mars. Humans have set foot on the moon, orbited the earth and lived aboard space stations for extended periods, but have not yet visited any other planets.Full Answer >