the scientists observed two far-away galaxy clusters that had crashed into each other at high speed: normal matter would have been scattered nearby after the collision, while dark matter would not. it can be so great and nice for them. normally we are told not to look back, because the future is in front of us. you will get to know the voices on the phone and meet the staff at events. then the car flipped up in the air and landed upside-down on its roll bar. 