The light was detected by a team of scientists at Laval University in Canada. By looking through a telescope, they saw a pattern of light superimposed over the stars.
They also looked at data from the Sloan Digital Sky Survey which allowed them to actually detect the stars. They have published their findings in a paper titled "Discovery of peculiar periodic spectral modulations in a small fraction of solar type stars." Within the paper, they presented a theory which suggested that aliens could be broadcasting signals using these rapid pluses of light.
"We find that the detected signals have exactly the shape of an ETI (extra-terrestrial intelligence) signal […] and are therefore, in agreement with this hypothesis," the researchers said in a recent statement.
"Discovery of peculiar periodic spectral modulations in a small fraction of solar type stars" by Borra and Trottierhttps://t.co/E7P2gpieSS— Project Astrolabe (@IcarusAstrolabe) 11 October 2016
Other UFO enthusiasts have issued a warning over the recent findings, with the website Breakthrough Initiatives, urging caution and that these claims need to be investigated further, before definitive conclusions are made.
"Extraordinary claims require extraordinary evidence. It is too early to unequivocally attribute these purported signals to the activities of extraterrestrial civilizations " read a statement on the Breakthrough Initiatives website.
So for now, the truth is still out there and nobody is 100 percent clear on what it actually is yet.