QUESTIONS

Q : How do we know that the debris left when two neutron stars collide is so dense that if weighed on Earth, a teaspoonful would weigh one billion tonnes? Harry Kennard, Rye, E. Sussex. Q : Was Play-Doh originally developed as a wallpaper cleaner? What other products have taken on a different role than intended? Peter Smith, Durham. Q : Why is being read your rights by a U.S. cop called a Miranda warning? Barrie Miller, Monmouth.