Can time travelers go back in time and have sex with themselves? Astrophysicists investigate.

In yet another weirdly fascinating piece from the folks at MEL Magazine, writer Brian VanHooker spoke with several astrophysicists about the question we've all been pondering: can a time traveler go back in time and literally screw themself?

Astrophysicist Heloise Stevance replies that there are two main paradoxes you'd want to worry about.