Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A “city killer” asteroid the size of the Empire State ...

In 2029, the asteroid Apophis will skim past Earth closer than many communication satellites, turning a once-feared impact threat into a rare natural experiment in planetary defense. As space agencies ...

For nearly 20 years, scientists have known an asteroid named Apophis will pass unusually close to Earth on Friday, April 13, 2029. But most officials at the world’s space agencies stopped paying much ...

Apophis is projected to pass within 20,000 miles of our planet’s surface on April 13 2029. The menacing asteroid will harmlessly pass by, astronomers say. Apophis measures nearly a quarter of a mile ...

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An illustration of the asteroid Apophis, which will make a close flyby of the Earth in April 2029. Credit: ESA Science Office We are fewer than four years away from what may be the most significant ...

Once feared as a threat to Earth, the asteroid Apophis is now considered to pose a rare exploration opportunity — if space agencies can act in time. The 1,100-foot-wide (340 meters) Apophis, also ...