As to why Microsoft is charging 99 cents for the pack it is likely to do with licensing. Last I checked, Microsoft is not operating a deep-space telescope, and such images in 4K are rarely free ...

Witness live views of Earth from the International Space Station as it orbits the planet. Space streaming company Sen is broadcasting 24/7 from the ISS in beautiful 4K HD.

Witness live views of Earth from the International Space Station as it orbits the planet. Space streaming company Sen is broadcasting 24/7 from the ISS in beautiful 4K HD.