Pictures found online are usually of poor quality/ low resolution or they are not free for commercial use. Many times the terms of usage are not clearly specified and by using these images commercially or even for private purposes, you might be violating the usage conditions.
With a license purchase from ProAstrophotography.com, you are guaranteed to get formal rights to use the images in accordance to the purchased license. Moreover, Proastrophotography has high quality images to for a vast variety of astronomical objects to fulfill your various needs. We are collaborate with astrophotography experts and officially licensing the images from them so that you don not have to worry about using the images for your required purpose, after buying the appropriate license from us.