Two NASA astronauts just completed a last-minute spacewalk outside the Space Station

If you are switching to PC gaming from an Xbox.

its this great mystery.created_at:2018-03-23T19:57:15.

Mashable Light SpeedWant more space and science stories in your inbox?Sign up for Mashables weekly Light Speed newsletter.relatedPlaylistVideos:[]}; data.with new whales developing new songs.

thumbnail_url:https:\/\/zmgvideos.Credit: UIG via Getty ImagesThe researchers also suggested that the bowheads impressive song diversity could be due to an expanding population.

since were used to three and a half minute pop songs.

but each season had a new set of songs.marine researchers say theyve recorded bowheads singing an unprecedented number of songs.

captured in Arctic waters east of Greenland.Why are they changing their songs so much? asked Stafford.

getElementById(video-title-container-qGo5wEYqnW).Credit: Kate Stafford/University of WashingtonBetween 2010 and 2014.