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Scientists have discovered the oldest solid material ever found on Earth from a meteorite that fell in Australia about 50 years ago.

The material that the researchers examined are called presolar grains – or stardust – particles from a star that can eventually form new stars, along with planets, moons and meteorites.

While people around the world were celebrating the arrival of 2019, people at the Johns Hopkins Applied Physics Laboratory in Maryland were hard at work. Billions of miles away, the New Horizons probe was flying past Ultima Thule, a small object in the Kuiper Belt. By Tuesday morning, the hardware had sent back a status report that indicated the flyby went as planned, and New Horizons now has lots of data from Ultima Thule that it will slowly send back to Earth over the coming months.

While we don't yet have any of the data that will tell us details about this relic of the Solar System's formation, images taken during the approach solved one of the mysteries that had arisen as New Horizons closed in. But one of the key questions—is Ultima Thule one object or two?—remains unanswered.

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An American astronaut and Russian cosmonaut were forced to eject from an aborted launch to the International Space Station early Thursday and make an emergency landing.

NASA astronaut Nick Hague and Roscosmos cosmonaut Alexey Ovchinin were aboard the spacecraft when it launched at 4:40 a.m. EDT on a mission to the station. The duo blasted off from Kazakhstan's Baikonur Cosmodrome aboard the Russian Soyuz MS-10 spacecraft.

Moments after launch, the two were forced to eject from the spacecraft after they encountered trouble with a booster on the rocket.

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A mummified wolf pup and caribou believed to have walked Earth over 50,000 years ago were discovered with tissue and fur intact — a remarkable find, Canadian authorities say.

The caribou was found at the site of a 80,000-year-old volcanic ash bed and officials believe it's among the oldest mummified mammal tissue in the world, according to a release.

The head, two front limbs and torso of the caribou were intact. The wolf pup was found with a complete body.

Scientists have discovered an atom filled with atoms. The atom's electrons orbit at such a great distance that there's room for other atoms.

The atoms within the "giant atom" form weak bonds, produ cing a new exotic state of matter -- what scientists have dubbed "Rydberg polarons."

The discovery combines a pair of atomic phenomenon, both of which can only be studied under extremely cold conditions: Bose-Einstein condensates and Rydberg atoms.

For the first time, researchers have used the cloning method that produced Dolly the sheep to create two healthy monkeys, bringing science an important step closer to being able to do the same with humans.

Since Dolly's birth in 1996, scientists have cloned nearly two dozen kinds of mammals, including dogs, cats, pigs, cows and polo ponies, and have also created human embryos with this method. But until now, they have been unable to make babies this way in primates, the category that includes monkeys, apes and people.