London: Buzz Aldrin thinks that manned missions to Mars should take place sooner rather than later - within the next quarter of a century.
He thinks we should begin planning a permanent colony on the Red Planet, the BBC reported.
He believes that efforts to explore the surface of Mars to date have taken far too long, because the current generation of Mars rovers have to be controlled remotely from Earth - and it takes about 20 minutes for radio signals to be passed each way.
Aldrin`s vision involves astronauts being trained on the Moon for a life on Mars, and ultimately for new colonists to be brought to the new settlement on a routine basis.
He thinks this could be done using "interplanetary cyclers", spacecraft that are permanently moving between Mars and Earth.