Blender , many times creates another file called blender1, why ?

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1

many times i see when i save a file that it creates another one with the same name but with the extension .blender1

do you know why ?

In the poto , the ones are marked in green

2

Autosave files see: http://wiki.blender.org/index.php/Manual/Undo_and_Redo

3

Blender likes to automatically make backups of your blend files- I think if you take the 1 off the end of the file you’ll get a regular blend file that you can use…