Could there be particles that only interact gravitationally?

Subject: Could there be particles that only interact gravitationally?

Date: Thu Feb 18 07:01:16 2010
Posted by Yevgeniy
Grade level: grad (non-science) School: CSI
City: Staten Island State/Province: New York Country: USA
Area of science: Physics
ID: 1266501676.Ph

Message:


Could there be particles that only interact via gravity and no other force? 
According to mass would those particles be heavy or light, how about the mass 
of electron or proton?

Re: Could there be particles that only interact gravitationally?

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