Creative Commons: If you are posting content under a Creative Commons license, please attribute and link according to the specific license. If you are posting content under CC0 or Public Domain please consider noting that at the end of your post.
Not indicating that the content you copy/paste is not your original work could be seen as plagiarism.
If you are actually the original author, please do reply to let us know!
Sorry I have added the source of the image now. And This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted"
Wow, that's actually pretty cool.
Source: http://www.cracked.com/article_20432_5-illusions-that-prove-your-sense-reality-full-s232125.html
Not citing the source of photos(images) is plagiarism. Here is a post on why this is bad, and here is how easy it is to find allowed photos.
Creative Commons: If you are posting content under a Creative Commons license, please attribute and link according to the specific license. If you are posting content under CC0 or Public Domain please consider noting that at the end of your post.
Not indicating that the content you copy/paste is not your original work could be seen as plagiarism.
If you are actually the original author, please do reply to let us know!
Sorry I have added the source of the image now. And This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted"
By placing it in the photography tag you are implying that you made those images.