\u2014 Astropierre (@astropierre) March 21, 2025<\/a> <\/p>\n \u201cLife will be destroyed by the Sun\u201d<\/p>\n Musk\u2019s reasoning draws on our deepest fears. \u201cEventually, all life on Earth will be destroyed by the Sun. Our planet will end up reduced to ashes,\u201d he warned. \u201cTo avoid that fate, we need to become a multiplanetary species\u2014starting with self-sufficient cities on Mars. The journey will be long, so we have to begin now.\u201d<\/p>\n But what exactly does he mean? This time, Musk isn\u2019t talking about nuclear war, or even about human-driven climate change<\/a>. Nor is it the threat of an asteroid collision. What he\u2019s referring to is something astronomers have long agreed on\u2014the inevitable death of the Sun.<\/p>\n As our star ages, scientists say, it will burn hotter and brighter, heating Earth to the point where our atmosphere becomes toxic. Eventually, the Sun may expand into a red giant and possibly swallow the planet altogether, though researchers debate the details. For a brief cosmic moment, Mars could become more temperate\u2014perhaps even comfortable.<\/p>\n Earth to Elon: If we\u2019re incinerated, so is Mars. I\u2019m all for exploring Mars, but this isn\u2019t the rationale for it. https:\/\/t.co\/fwmbwPR4lV<\/a><\/p>\n \u2014 Captain Mark Kelly (@CaptMarkKelly) May 7, 2025<\/a> <\/p>\n Distracting us from immediate dangers<\/p>\n But that window wouldn\u2019t last long. In the far future\u2014hundreds of millions, perhaps billions, of years from now\u2014Mars itself could be destroyed or rendered uninhabitable.<\/p>\n Meanwhile, here on Earth, our own planet is already under threat. Massive greenhouse gas emissions are driving a man-made extinction, reshaping ecosystems faster than they can recover. Most scientists agree that preserving Earth\u2019s habitability<\/a> now is our real insurance policy for the future.<\/p>\n If humanity can keep its home world thriving, it will be better prepared to face the Sun\u2019s eventual transformation\u2014when, billions of years from now, our star finally burns out. Until then, Musk\u2019s dream of Mars may inspire, but saving Earth remains the only mission with real urgency.<\/p>\n Nathalie Mayer<\/p>\n Journalist<\/p>\n Born in Lorraine on a freezing winter night, storytelling has always inspired me, first through my grandmother’s tales and later Stephen King’s imagination. A physicist turned science communicator, I’ve collaborated with institutions like CEA, Total, Engie, and Futura. Today, I focus on unraveling Earth’s complex environmental and energy challenges, blending science with storytelling to illuminate solutions.<\/p>\n \t\t![\"mayer-nathalie\"](\"https:\/\/www.futura-sciences.com\/en\/wp-content\/uploads\/2025\/03\/mayer-nathalie.avif\")
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