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Astronomers may have found the first known extragalactic exoplanet
By Lisa Grossman
Astronomers spot first possible exoplanet outside our galaxy
By Linda Geddes
Scientists may have found a planet outside of the Milky Way galaxy for the first time
By Sharon Pruitt-Young
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Signs of first planet found outside our galaxy
By Paul Rincon
Astronomers have found what may be the first exoplanet in another galaxy ever detected
By Chelsea Gohd
Nasa finds first possible planet outside our galaxy
By Andrew Griffin
NASA discovers first possible planet outside our galaxy
By Amy Woodyatt