US EditionFinding 40,000 Asteroids Before They Find Us
The catalogue grew by 10,000 in three years as global surveys focus on detecting mid-sized asteroids that could cause serious regional damage, officials said.
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Finding 40,000 asteroids before they find us
The number 40,000 might not sound particularly dramatic, but it represents humanity's growing catalog of near-Earth asteroids, rocky remnants from the solar system's violent birth that cross paths with our planet's orbit. We've come a long way since 1898, when astronomers discovered the first of these wanderers, an asteroid called Eros.
Finding 40,000 Asteroids Before They Find Us
Astronomers have just catalogued the 40,000th near Earth asteroid, a milestone that marks humanity's transformation from passive targets to active defenders of our planet. These space rocks, ranging from house sized boulders to some the size of mountains, follow orbits that bring them uncomfortably close to Earth. Each discovery adds another piece to our planetary defence puzzle, though current surveys have found only about 30 percent of the mid…
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