The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking Earth eight years from now.

"An asteroid this size impacts Earth on average every few ... A similar scenario unfolded in 2004 with Apophis, an asteroid initially projected to have a 2.7% chance of striking Earth in 2029.

“For asteroids larger than 30 metres (98.4 feet) in size, 2024 YR4 now holds ... While it’s likely that the asteroid will harmlessly whiz by Earth, as Apophis is expected to do in 2029 ...

A newly discovered asteroid being tracked by the global science community has a nearly 98% chance of zooming by Earth without ...

If it did collide with Earth, an asteroid of that size could cause an explosion in ... impact locations are densely populated areas. When Apophis was first spotted two decades ago, it initially ...

Thankfully, YR4 is much smaller than the infamous Apophis. The Apophis asteroid was the size of a cruise ship. YR4 is about 130 to 300 feet, which would cause far less damage if it were to strike.

Thankfully, YR4 is much smaller than the infamous Apophis. The Apophis asteroid was the size of a cruise ship. YR4 is about 130 to 300 feet, which would cause far less damage if it were to strike.