While only four states of matter can be observed in nature, three others have been observed under laboratory conditions, and dozens more are theorized. The four states of matter familiar to most people are solid, liquid, gas, and plasma.

Like gas, plasma cannot be seen; however, it exists in nature and in devices. Lightning, electric sparks, and some flames can generate plasma. It occurs in the coronas of stars, including our sun. It is produced for fluorescent, neon, and other lights, and is used in plasma televisions.

Like gas, plasma has no defined shape or volume. It is created by very high voltage or temperature, which separates atoms into positively-charged nuclei in a swarm of electrons.

Matter states five, six, and seven are quark-gluon plasma, Bose-Einstein condensates, and neutron-degenerate matter, which have been created in the laboratory as of this 2017 writing.

The image provided is of Bose-Einstein condensates.

Many more states of matter are theorized. Among them are photonic matter, fermionic condensate, superfluid, supersolid, quantum spin liquid, the dropelton, and time crystals.

Scientists are searching for them.

More Info: en.wikipedia.org