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Scientists Develop ‘Negative Mass’ Liquid, Coming Closer to Understanding Black Holes

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This NASA/ESA Hubble Space Telescope image of the cluster Westerlund 2 and its surroundings has been released to celebrate Hubble’s 25th year in orbit and a quarter of a century of new discoveries, stunning images and outstanding science. The image’s central region, containing the star cluster, blends visible-light data taken by the Advanced Camera for Surveys and near-infrared exposures taken by the Wide Field Camera 3. The surrounding region is composed of visible-light observations taken by the Advanced Camera for Surveys.
This NASA/ESA Hubble Space Telescope image of a star cluster. Studying negative mass may help scientists identify and answer questions about dark energy, which is the force thought to drive the expansion of the universe.

Scientists have created liquid with “negative mass” inside of a laboratory, according to new results published in the journal Physical Review Letters.

Negative mass refers to a confusing concept that defies how most of us interact with the world, Newsweek reports. When a soccer ball is kicked, it moves away from the kicker. The opposite is true with negative mass: If the same ball contained negative mass, it would move toward the kicker when kicked.

This phenomenon defies Newton’s Second Law of Motion, which says that when an object is pushed with a given force, it will move away at a given speed, depending on the object’s mass, force, and friction.

“That’s what most things that we’re used to do,” lead researcher Michael Forbes explained in a statement. “With negative mass, if you push something, it accelerates toward you.”

Read more here about the complex process the scientists used to create the negative mass, as well as how it could be used to study mysterious forces in the universe, including black holes and dark energy.

Read the complete findings in the Physical Review Letters journal.