Rubble pile' asteroids – such as Itokawa around 1.2 million miles away – are made up of loose boulders and rocks that have clumped together under the influence of gravity, so much of them are empty ...

This includes JAXA's Hayabusa mission, which rendezvoused with the asteroid 25143 Itokawa in 2005, and Hayabusa2, which rendezvoused with 162173 Ryugu in 2018. Most recently, NASA's Origins ...

Astronomers have gotten a glimpse of the "city-killer" asteroid before it disappears until 2028, according to NASA. The space rock, called 2024 YR4, was previously given up to a 3.1% chance of ...