ISS photo taken from the ground shows two astronauts performing a spacewalk - Daily Mail

The photo, taken by award-winning German photographer Sebastian Voltmer, is believed to be the first ground-based image of two ISS astronauts spacewalking.

When it comes to mesmerising images of space, we're more accustomed to those taken by astronauts, probes or iconic telescopes such as Hubble. But a fascinating new picture, which was actually taken … [+5032 chars]

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