Open Access (OA) refers to the unrestricted and free online availability of scholarly research, allowing anyone to read, download, share, and reuse academic content without financial, legal, or technical barriers. It removes paywalls and subscription fees, ensuring that research outputs—such as journal articles, books, and data—are accessible to a global audience.
"The open access movement is about ensuring that research serves the public good, not just private interests." — Peter Suber, Director of the Harvard Open Access Project
Open Access Physics and Astronomy Collection