article_snippet.sent: Scientists say Scientists have found 50 galaxies  that may contain intelligent alien races.
article_snippet.sent: 50 galaxies  that may contain intelligent alien races were found to be emitting ‘unusually high’ levels of radiation - possibly indicating ‘the presence of a highly advanced civilisation.
article_snippet.sent: Within 50 galaxies  that may contain intelligent alien races, Pennsylvania scientists said it was possible that an alien race could be harnessing the power of the stars - emitting huge amounts of noticeable heat in the process.
article_snippet.sent: Pennsylvania scientists found 50 galaxies emitting unusually high levels of radiation.
article_snippet.sent: This could be because aliens are harnessing the power of  stars.
article_snippet.sent: Shown is Arp 220, one promising galaxy candidate .
article_snippet.sent: The idea behind our research is that, if an entire galaxy had been colonised by an advanced spacefaring civilisation, the energy produced by that civilisation's technologies would be detectable in mid-infrared wavelengths,’ said Dr Wright.
article_snippet.sent: The energy used by such a race to be noticeable would have to be huge - likely harnessing the power of a galaxy’s stars.
article_snippet.sent: The researchers picked out 100,000 galaxies of interest, and found that 50 of The researchers were emitting ‘unusually high levels of mid-infrared radiation.
article_snippet.sent: Our follow-up studies of those galaxies may reveal if the origin of Our follow-up studies of those galaxies radiation results from natural astronomical processes, or if it could indicate the presence of a highly advanced civilization,’ said Dr WrightDr Wright.
article_snippet.sent: The observations could simply be due to natural phenomena, such as dust and star formation.
article_snippet.sent: Dr Wright said, including the 50 galaxies, none of the 100,000 were found Dr Wrightwith more than 85 per cent of none of the 100,000 light being used by alien industry.’
article_snippet.sent: However, it’s possible that some galaxies do harbour advanced alien life - but some galaxies are emitting less energy than we can currently detect.
article_snippet.sent: The harder we look and The longer we work, the better we detection limit will be, and the less energy a galaxy-spanning civilization would need to use for us to discover it,’ he added.
article_snippet.sent: Dr Wright and his colleagues are continuing to study galaxies for signs that we are not alone.
highlights_snippet.sent: Pennsylvania scientists found 50 galaxies emitting unusually high levels of radiation .
  
highlights_snippet.sent: This could be because aliens are harnessing the power of entire stars .
  