Deck the halls with... zero-gravity trees?  

Astronauts Barry "Butch" Wilmore and Terry Virts beamed holiday greetings from their perch in the International Space Station 220 miles above the planet to the rest of us Earthlings while a Christmas tree floated nearby.

"This is definitely going to be a Christmas that we'll remember, getting a chance to see the beautiful Earth, and I hope that for you also it will be a memorable Christmas this year," Virts said in the video on NASA's YouTube channel.

Wilmore has been on ISS since late September and will return to Earth in March. Virts arrived in late November and will stay until mid-May.