Negative Mass

[The Wookie]

Surprised to see that no-one has brought this up:

https://www.sciencedaily.com/releases/2017/04/1704...

Seems pretty significant to me, or is it something that was expected in the scientific community?

[The Wookie]

AshVX220 said:

The first steps in developing Anti-Gravity?

Looks like not as it's only inertial mass, not gravitational mass but it would be interesting to know if there any implications for space propulsion