NASA spacecraft sent asteroid rubble flying in sample grab

CAPE CANAVERAL, Fla. (AP) — NASA's Osiris-Rex spacecraft crushed rocks and sent rubble flying as it briefly touched an asteroid, a strong indication that samples were collected for return to Earth, officials said Wednesday.

Scientists won't know until next week how much was gathered at asteroid Bennu — they want at least a handful of the cosmic rubble. But close-up pictures and video of Tuesday's touch-and-go operation raised hopes that goal was achieved.

“We really did kind of make a mess on the surface of this asteroid, but it’s a good mess, the kind of mess we were hoping for,” said lead scientist Dante Lauretta of the University of Arizona at Tucson.

It was the first asteroid-sampling effort by the U.S., coming four years after the spacecraft rocketed from Cape Canaveral and two years after it reached Bennu. Japan has taken asteroid samples twice.

The carbon-rich Bennu is a time capsule believed to contain the original building blocks of the solar system 4.5 billion years ago and, as such, can help scientists better understand the origins of Earth and life as we know it.

Osiris-Rex scored a near bull’s-eye, reaching down with its robot arm to within a yard (meter) of its intended target zone in the center of boulder-rimmed Nightingale Crater. The sampling container on the arm made contact with the black, crumbly terrain for about six seconds and pushed at least three-quarters of an inch (2 centimeters) into the ground, crushing a large rock in the process, officials said.

As planned, pressurized nitrogen gas fired onto the surface a second later, to kick up a shower of debris so the spacecraft could suck up as much dust and as many pebbles as possible.

The spacecraft quickly backed away and, by Wednesday, was a safe 50 miles (80 kilometers) from...