![Since Mass Exists, Can There Be Negative Mass?](https://hight3ch.com/wp-content/uploads/2017/05/since-mass-exists-can-there-be-n.jpg)
Media outlets claim researchers have created negative mass, but what they really created is negative ‘effective’ mass, which is a little different.
Media outlets claim researchers have created negative mass, but what they really created is negative ‘effective’ mass, which is a little different.