From the unconventional and awe-inspiring to the hilarious and heartwarming, here's a look at some of the most interesting photos, videos and stories that have our newsroom talking today. What's capturing your attention, filling your inbox and cluttering your Facebook/Twitter feed? Tweet us the stories you're talking about using #InstantIndex or email us at ABC.WorldNews@abc.com and they could appear on World News.

"Space Oddity" Today Chris Hadfield returns to Earth as the brave outgoing commander of the International Space Station. But he also returns as a rock star. Literally. On Sunday, the Canadian astronaut released a YouTube video of him performing David Bowie's "Space Oddity" in space.

Image credit: Chris Hadfield/YouTube