FIRE IN THE SKY

According to scientists, it’s inevitable that a giant piece of space rock will eventually hurtle toward Earth: “So where do we currently stand in terms of planetary defense against Earth-impacting asteroids?”

We’ve all seen the movies in which an asteroid is on a collision course with our planet and we have scant time to devise some way to destroy it or change its path. In this entertaining book, Dillow (co-author, with Charles Campisi: Blue on Blue: An Insider's Story of Good Cops Catching Bad Cops, 2017, etc.), a veteran reporter and war correspondent, investigates how much truth there is to these narratives. In short, how much should we worry? Regarding the chance of an impact, he offers an alarming conclusion. “It’s not a question of if,” he writes. “It’s only a question of when. And at this point, we can only hope that the world will be ready.” Using his own research and numerous interviews with scientists and other experts, the author provides an elegant overview of the history of terrestrial collisions and breaks down what governments are doing to prepare for another—and whether that preparation is good enough. From asteroid hunters to planetary defense officers, a cadre of specialists are working to identify threats and devise realistic plans to neutralize them. Dillow explains the science behind these efforts in plain language and, despite the sometimes-weighty subject matter, good humor. He also engagingly describes his awe in considering Earth from a new perspective, that of a vulnerable, smallish planet flying through a crowded solar system. One medium-sized asteroid (never mind a comet) slamming into Earth could easily destroy a city, a country, or even most of mankind. After all, it’s generally accepted that a 6-mile-wide asteroid wiped out almost every living thing on the planet 65 million years ago, including dinosaurs.

Dillow threads a lovely history of asteroid impacts into an urgent call to arms, and the result is a thrilling read.