Why .Edu Backlinks Are Powerful?
EDU backlinks are Strong link equity sites that have been around for a long time. They have trusted and quality backlinks and Google prefers EDU backlinks.
When you’re building backlinks, there are certain qualities you’ll want to look for. Relevant, high Domain Authority, low (or no) Spam Score, high Citation Flow, and Trust Flow.
.edu will increase your domain authority, it's very important to continue getting another backlinks types without panda or penguin penalty.