Watch the moment a cosmonaut tossed a bag of parts into space but NASA said the space litter is harmless

• A cosmonaut threw a bag of leftover parts into space during a spacewalk last week. 
• Technically, it's space littering. But NASA said tossing the bag into space was harmless.
• The bag won't spend much time in orbit and soon burn up in Earth's atmosphere.

Last week, cosmonauts  Sergey Prokopyev and Dmitri Petelin donned their spacesuits and ventured outside the International Space Station for a spacewalk that would last 7 hours and 11 minutes.