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It takes 250 days (0.68 years) in the transit to Mars, and in the case of a free-return style abort without the use of propulsion at Mars, 1.5 years to get back to Earth, at a total delta-v requirement of 3.34 km/s. Zubrin advocates a slightly faster transfer, that takes only 180 days to Mars, but 2 years back to Earth in case of an abort.
Extra-close oppositions of Mars happen every 15 to 17 years, when we pass between Mars and the Sun around the time of its perihelion (closest point to the Sun in orbit). The minimum distance between Earth and Mars has been declining over the years, and in 2003 the minimum distance was 55.76 million km, nearer than any such encounter in almost ...
The lowest energy transfer to Mars is a Hohmann transfer orbit, a conjunction class mission which would involve a roughly 9-month travel time from Earth to Mars, about 500 days (16 mo) [citation needed] at Mars to wait for the transfer window to Earth, and a travel time of about 9 months to return to Earth. [9] [10] This would be a 34-month trip.
A collection of Martian rocks could reveal details about potential past life on the Red Planet – but first NASA has to get them back to Earth.. For years, the U.S. space agency's Perseverance ...
F or nearly half a century, NASA has been talking an awfully good game about its much-heralded Mars Sample Return (MSR) project. As long ago as 1978, the space agency requested funding to develop ...
Robert Zubrin, a long-time advocate for human Mars missions, concluded in 1996 that the best approach to MSR would be launching directly to Earth using propellants made on Mars, because a rendezvous in Mars orbit would be too risky and he estimated that a direct-return MAV would mass 500 kg, too heavy to send to Mars affordably if fully fueled ...
The company is one of NASA's largest contractors and is one of several currently working on projects related to Mars. So far, only unmanned rovers and orbiters have made it to the Red Planet. When ...
[6] [10] Two castles would be used, an outbound one on an Aldrin cycler with a fast transfer to Mars and long trip back, and an inbound one with fast trip to Earth and long return to Mars, [3] which Aldrin called up and down escalators. [6] The astronauts would meet up with the cycler in Earth orbit and later Mars orbit in specialised craft ...