Earth or Mars?

What is that venture capitalist meeting look like? 'So, Elon, what do you want to do?' 'I want to go to Mars.' 'How much will it cost?' '$1 trillion.' 'Is it safe?' 'No. People will probably die.' 'What's the return on the investment?' 'Nothing.'

- KUMAR ABISHEK

Astrophysicist Neil deGrasse Tyson recently fired a cheeky salvo at Elon Musk's ambitious dream of colonizing Mars. Dr. Tyson questioned the feasibility of Mr. Musk's plan, suggesting humanity focus on solving Earth's pressing problems instead.

Mr. Musk, never one to shy away from a spat, hit back on X: "Wow, they really don't get it. Mars is critical to the long-term survival of consciousness. Also, I'm not going to ask any venture capitalists for money."

As Earth faces climate chaos, dwindling biodiversity, and resource depletion, a stark choice emerges: Should we invest in preserving our fragile home or make a gamble on finding a new planetary home? The urgency of the situation demands a decisive answer.

Mr. Musk's vision is nothing short of audacious—developing a self-sustaining Martian metropolis by mid-century, by ferrying settlers and resources via his SpaceX's Starship. But Mars' paper-thin CO2 atmosphere, extreme cold, and cosmic radiation make survival a herculean task. And let's not forget the glaring absence of liquid water.

Terraforming Mars—turning it into a second Earth—would take centuries, not to mention technologies we haven't invented yet. Mr. Musk himself estimates a self-sustaining colony would need a million tonnes of equipment, costing $1,000 trillion—far exceeding the current US gross domestic product (GDP) of $29 trillion.