After a case of mistaken data 10 years ago, scientists have finally confirmed the first planet discovered outside Earthās solar system by NASAās Kepler space telescope, according to a team from the University of Hawaii.
āKepler-1658bā was discovered by Ashley Chontos, a graduate student with the University of Hawaiiās Institute for Astronomy. Her team confirmed the exoplanet as part of her first-year research project in February.
The gas giant whips around its sun every 3.85 days. From the planetās surface, its star would appear 60 times larger in diameter than Earthās sun appears from its surface.
The exoplanetās discovery has been a rocky road.
Ten years ago, initial estimates had been incorrect, so the sizes of āKepler-1658bā and its star had been underestimated, according to . When the numbers didnāt add up, scientists thought they had made a mistake and said the data didnāt point to a planet.
But in 2017, Chontos went back through NASAās Kepler telescope data using new software and eventually re-classified āKepler-1658bā from a data anomaly to a potential planet.
āOur new analysis, which uses stellar sound waves observed in the Kepler data to characterize the star, demonstrated that the star [and the planet are] in fact three times larger than previously thought,ā she told NASA.
Because of her teamās new data, Chontos said āKepler-1658bā should be classified as a āhot Jupiterā or as a heated gas planet, she explained in her .
āHot Jupitersā typically orbit their stars at about one-tenth the distance that the Earth orbits its sun.
Astronomer Dan Huber, who co-authored the paper with Chontos, said their team had Dave Latham, a senior astronomer at the Smithsonian Astrophysical Observatory, use spectroscopic data to confirm their findings.
āAs one of the pioneers of exoplanet science and a key figure behind the Kepler mission, it was particularly fitting to have Dave be part of this confirmation,ā Huber told NASA.
Despite being the 1st candidate planet discovered by the telescope, Kepler-1658b had a rocky road to confirmation. 10 years later, scientists have now confirmed that it is, in fact, a planet. It whips around its star every 3.85 days. Info:
ā NASA (@NASA)