MIT Students' Visionary Plan to Save Earth from an Asteroid: A Story of Innovation and Resilience
In the late 1960s, a group of graduate students at MIT embarked on an extraordinary mission: to devise a plan to prevent an asteroid from crashing into Earth. This ambitious project, known as Project Icarus, was a detailed and surprisingly feasible strategy involving hydrogen bombs, Saturn V rockets, and extensive mathematical calculations. Led by Professor Paul Sandorff, the course challenged students to imagine a worst-case scenario: an asteroid named Icarus, on a collision course with Earth, with impact just over a year away. What followed was a testament to human ingenuity and the power of collaboration.
A Real Threat, A Real Deadline
The asteroid Icarus was no fictional creation. Discovered in 1949 by astronomer Walter Baade, its orbit brought it dangerously close to both the Sun and Earth. By the mid-1960s, scientists like Robert Richardson had calculated that a minor change in its path could result in a catastrophic impact with Earth in 1968. This wasn't a distant possibility; it was a very real threat with a very real deadline.
Physicist Stuart Thomas Butler didn't downplay the danger. He warned that Icarus 'could reduce any of the world's major cities to rubble in a flash.' In a decade marked by the fear of nuclear war, the idea of planetary devastation felt eerily plausible. The New York Times reported a surge in 'nervous telephone calls' from citizens worried about an asteroid apocalypse, even as astronomers tried to reassure the public that the 1968 flyby posed no danger. The bigger issue remained: no one had a plan in place if an impact became imminent.
Student Engineers Take on Armageddon
In January 1967, with just 70 weeks until Icarus' closest approach, Professor Sandorff assigned his students a daunting task: devise a realistic plan to stop the asteroid. The twist? They could only use existing technology. Some students were initially skeptical, even joking about building a massive trampoline. But as they delved into the math and physics, their attitude shifted. Sandorff's stark reminder of the impending disaster on June 19, 1968, with a blast equivalent to 500 billion tons of TNT and a tsunami that would kill millions, motivated them to take action.
The students formed small teams to tackle different technical challenges: propulsion, payload, guidance, and more. They soon realized that no solution could be achieved in isolation; every decision affected the rest. This project became a masterclass in real-time systems engineering.
The Nuclear Option and Beyond
One of their initial conclusions was that early detection, when the asteroid is far from the Sun, makes diversion much easier. A small nudge at the right time can result in a significant course shift. However, Icarus was already too close, moving at over 100,000 km/h. The students considered using a hydrogen bomb to blow it apart, but concerns arose about the potential for deadly fragments to still hit Earth.
Instead, they proposed a controlled solution: launching six Saturn V rockets, each carrying a 100-megaton hydrogen bomb. The first would detonate 100 feet from the asteroid, vaporizing part of its surface and pushing it off-course. The remaining rockets would act as backups or target any remaining fragments. They estimated a 71% chance of success, with a cost of less than 1% of the U.S. GDP.
Years Later, Their Plan Becomes Policy
It wasn't until 1989, when an undetected asteroid flew uncomfortably close to Earth, and the 1994 impact of the Shoemaker-Levy 9 comet on Jupiter, leaving massive scars, that governments took notice again. NASA officially made planetary defense part of its core mission in the late 1990s, finally implementing the ideas first developed by MIT students in 1967. Today, over a million asteroids have been tracked, and none are currently on a collision course with Earth. This story is a testament to human ingenuity, resilience, and the power of collaboration in the face of a global threat.
