NASA has compiled an impressive album of astronaut Scott Kelly's best images grabbed during his 340-day stay aboard the orbiting outpost, which ended earlier this week when he and fellow One-Year mission participant Mikhail Kornienko returned to terra firma.

Here are half a dozen snaps which caught our eye, with Kelly's original (Twitter) captions:

Another pass through #Aurora.

#Bahamas, the strokes of your watercolors are always a refreshing sight.

#NYC last night.

#Goodevening #Japan.

Color palette of the #Spanish coast

#MilkyWay. You're old, dusty, gassy and warped.

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