It's time to start chucking some cash into your Mars vacation fund. SpaceX's interplanetary Starship hasn't even left Earth yet, but Elon Musk is already speculating about the price of a ticket to Mars. In a tweet on Sunday, Musk said he's confident that moving to Mars will one day cost less than $500,000 (£390,000, AU$710,00), though that price tag is "very dependent on volume." Musk thinks the ticket price could eventually dip below $100,000, cheap enough that "most people in advanced economies could sell their home on Earth and move to Mars if they want." A half-million bucks sounds like a lot of money, but ... (full story)