NASA has a new plan to protect Earth from Asteroids, including a '1000-strong' space army

NASA has announced a new strategy to protect Earth from potentially catastrophic asteroids, inspired by the event that led to the extinction of dinosaurs 66 million years ago. The National Preparedness Strategy and Action Plan for Near-Earth Objects (NEOs) and Hazards outlines various measures to defend against hazardous NEOs. While there is no immediate threat, NASA aims to prepare for possible worst-case scenarios.

The Plan: Spacecraft or Nuclear Solutions?

NASA's plan includes sending a "1,000-strong army" of spacecraft to intercept and deflect large asteroids heading toward Earth. In more severe cases, the agency is contemplating using nuclear devices, similar to the plot of the 1998 film "Armageddon," to break up or divert asteroids on a collision course with our planet.

Successful Testing: The DART Mission

One of the key components of NASA's defense strategy is the use of kinetic impactors. In 2022, NASA conducted a successful test of the Double Asteroid Redirection Test (DART) mission, which involved crashing a spacecraft into a non-threatening asteroid to change its trajectory. This test demonstrated NASA's ability to redirect hazardous asteroids and serves as a crucial method in their planetary defense efforts.

Nuclear Contingency Plan

In cases where an asteroid is detected with little time to respond, NASA may resort to nuclear explosives. If a large asteroid is only months away from impact, a nuclear blast could potentially deflect or fragment it, preventing a global disaster.

The Potential Consequences of an Asteroid Strike

NASA's strategy acknowledges the dire consequences of a planet-killer asteroid, similar in size to the one that caused the Chicxulub event. An impact of this magnitude would generate extreme heat, vaporize materials, and release dust into the atmosphere, blocking sunlight and resulting in an "impact winter." Such conditions could lead to mass extinction, reminiscent of the event that ended the age of dinosaurs.