Following its successes retrieving lunar samples from both the near and far sides of the Moon, China is planning an encore, sending a probe to snatch material from a near-Earth asteroid. The target of the Tianwen-2 mission, which is expected to launch by the end of the month, is a chunk of rock named 469219 Kamo'oalewa. It is one of just seven asteroids that fall into a little-understood class known as quasi-satellites of Earth--and it could also be the first known asteroid comprised of lunar material. That hypothesis could be confirmed by laboratory studies of fragments collected by Tianwen-2, which are due to be returned to Earth about 2.5 years after launch. "This is an ambitious mission to explore a fascinating object," says astrophysicist Amy Mainzer of the University of California, Los Angeles.

Shoppers look at clothes while others walk around Twelve Oaks Mall on Nov. 24, 2023, in Novi, Michigan. BUY SMARTER: Major retailers use AI to slash number of clothing returns when shopping online. UNPLUGGED FROM SOCIETY: Experts warn new tech could cause people to withdraw socially. TACTICAL TECH: Cheap drones can take out expensive military systems, warns former Air Force pilot pushing AI-enabled force. The military metaverse enables pilots to have more frequent training against relevant targets, Robinson said.