"Science (from Latin scientia, meaning "knowledge") is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. In an older and closely related meaning, "science" also refers to a body of knowledge itself, of the type that can be rationally explained and reliably applied." - Wikipedia
The study and expansion of consciousness is a science that traditionally has been called religion, philosophy, psychology, mysticism, magic, etc. Nevertheless, it is "a systematic enterprise that builds and organizes knowledge in the form of testable explanations." In other words, it is Gnostic, "something that is known only through experience."
"We should not mistake the Truth with opinions. Many think that the Truth is this or that, or that the Truth is within this or that book, or within this or that belief or idea, etc. Whosoever wants to experience the Truth should not mistake beliefs, ideas, opinions and theories with that which is the Truth. We must experience the Truth in a direct, practical and real manner; this is only possible in the stillness and silence of the mind, and this is achieved by means of meditation."