Jeffrey Bennett's Top Ten List of Mysteries

(As highlighted in Cosmic Horizon)

 

Mystery 10: Is There Life Elsewhere in Our Solar System?

 

Mystery  9: Where Are the Sun's Neutrinos?

 

Mystery  8: What Does the Universe Look Like?

 

Mystery  7: How Do Galaxies Evolve?

 

Mystery  6: Are Earth-like Planets Common?

 

Mystery  5: What Makes Gamma-Ray Bursts?

 

Mystery  4: Did the Universe Have a Bout of Inflation?

 

Mystery  3: What is the Fate of the Universe?

 

Mystery  2: What is the Universe Made of?

 

Mystery  1: Are We Alone?