Questions with the keyword 'collide'

• if two planets in our solar system collided would it have a negative effect on our planet? by THE GREAT MANGO to Gavin, Mark, Michel, Roisin Comments: (No comments so far )
• If it is possible for they Milky Way to collide with another galaxy. What will happen? by Aj to Roisin, Mark Comments: (No comments so far )