I am sure most of you heard about Elon Musk’s recent plan he announced to start getting people to Mars within 10 years and have a self-sustaining colony of around a million people within 40-100 years at an eventual cost of around $200,000 per person. (more to start)
Also, his vision encompasses travel beyond Mars as well.
“This system really gives you freedom to go anywhere you want in the solar system,” said Musk. “I wouldn’t recommend this for interstellar journeys, but this system–provided we have filling stations along the way–means full access to the entire greater solar system.” In particular, he’s eyeing a mission to Europa
I am assuming Soylent or some other soylent-like meal replacement would need to be utilized to optimize nutrition-to-weight cost ratios for consumption both during travel and when on Mars.