Bizarre, Earth-sized rogue planet found floating in Milky Way

Bizarre, Earth-sized rogue planet found floating in Milky Way

Scientists have discovered another rogue 행성, but this one has even experts perplexed: It’s slightly smaller than Earth and is floating through the Milky Way.

The potential exoplanet likely has a mass similar to Mars, researchers said in the study published on the arXiv.org repository. Though rogue planets (those without stars) have been discovered before, they’re extremely hard to spot.

Our discovery demonstrates that low-mass free-floating planets can be detected and characterized using ground-based telescopes,” the study’s co-author, Prof. Andrzej Udalski, principal investigator of the Optical Gravitational Lensing Experiment (OGLE) project, said in a 성명서.

An artist's impression of a gravitational microlensing event by a free-floating planet. 신용: Jan Skowron / Astronomical Observatory, University of Warsaw

An artist’s impression of a gravitational microlensing event by a free-floating planet. 신용: Jan Skowron / Astronomical Observatory, University of Warsaw

MASSIVE GLOWING ‘ROGUEPLANET SPOTTED ‘DRIFTINGIN SPACE

이상 4,000 exoplanets have been discovered by NASA in total, most using the transit method. Approximately 50 of them were believed to be potentially habitable as of September 2018, as they have the right size and the right orbit of their star to support surface water and, at least theoretically, to support life.

Transit observations allow astronomers to look at a star and see it dim because another object has crossed in front of it. This type of observation will be expanded when NASA launches its James Webb Space Telescope in October 2021. The telescope was delayed in part because of the coronavirus pandemic, 폭스 뉴스 이전에보고 된.

Another technique, which researchers used in the latest discovery, 이다 “gravitational microlensing,” which allows experts to look as objects in the foreground pass in front of objects in the background. The foreground object acts as a lens, bending and magnifying the light to reveal certain traits about the object in the background.

The event, known as OGLE-2016-BLG-1928, is the shortest microlensing event ever, at just 42 의사록.

When we first spotted this event, it was clear that it must have been caused by an extremely tiny object,” study co-author Dr. Radoslaw Poleski added.

Chances of observing microlensing are extremely slim because three objects—source, lens, and observermust be nearly perfectly aligned,” added the study’s lead author, Przemek Mroz. “If we observed only one source star, we would have to wait almost a million years to see the source being microlensed.

MILKY WAY GALAXY COULD HAVE ‘OCEAN WORLDSALL OVER, NASA SAYS

8 월, 별도의 연구자 그룹 제안 더있을 수 있습니다 “도적” 행성 은하수에있는 별보다.

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