Astronomy has come a long way over the last few decades. A combination of more sophisticated technologies, and our unprecedented insight into the inner-workings of the universe, we've been able to clarify some of the cosmological mysteries presented by long-dead astronomers. These solutions, however, often bring even more mysteries to light.

What we're trying to say, and this is something we believe many scientists would agree with, is that the universe, at its core, yields more questions than answers. Given the fact that some are fundamental to explaining the universe and its properties (like gravity and how particles interact), which unsolved mysteries are the most important?

WATCH: "What Are The Biggest Mysteries in Astronomy?"

SEE ALSO: 

• The Mysteries of Saturn
• 6 Mysteries of Our Solar System
• Mysteries in Physics: Where is All the Antimatter?
• Unmasking the Mysteries of the Milky Way's Core
• The Search For Antimatter & More: LHC to Resume Probing Mysteries of the Universe