Astronomers Find a Blinking Star Near the Milky Way Center

In this week's new astronomical program, a team of astronomers led by Dr. Leigh Smith of Cambridge discovered a star 100 times larger than our sun that almost disappeared from the sky every few decades. And they do not know why it is so.

The star, called VVV-WIT-08, is found in 25,000 light-years, and is about 30 percent lower in light than disappearing. It is not the first star to be found with this changing light pattern, but evidence is growing that this could be just another example of a new constellation.

The name VVV-WIT-08 itself asks for an explanation. The "WIT" in the middle actually represents "what is this", which astronomers call the stars difficult to distinguish from any particular established species.

The team, which included members of the University of Edinburgh, University of Hertfordshire, University of Warsaw, and Universities Andres Bellow in Chile, discovered this new dynamic star through the VISTA Variables in the Via Lactea (VVV) survey, using VISTA telescope in Chile . Its blurring pattern was then confirmed using the Optical Gravitational Lensing Experiment (OGLE), which shows star blurring in clear and visible light.

The VISTA telescope in its dome at sunset. Its primary mirror is 4.1 meters wide.

Astronomers think that the main cause of this darkening process is the opaque discs of dust and gas, or possibly a binary partner or a planet passing in front of a star. But many interpretations of the novel have not yet been rejected. With so many stars being added to this new category of "giants blinks", it's only a matter of time before too many ideas fill up on what can cause blurring. And there are still too many scenarios to find and explanations to be explored.

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