Chaos
The dark mass that Gaea sprang through is commonly referred to as Chaos. In Greek mythology, Chaos represented the primordial void or nothingness that existed before the creation of the universe. From Chaos, Gaea, the Earth, emerged as one of the first entities to take form.
Gaea, in Greek mythology, is the personification of the Earth and is often considered one of the primordial deities. She is said to have emerged from Chaos, the vast, dark, and formless void that existed before the creation of the universe. From this shapeless mass, Gaea gave rise to various other deities and beings, establishing the foundation for the cosmos and the pantheon of Greek mythology. Her emergence symbolizes the birth of life and the natural world from chaos.
In Greek mythology, Gaea, or Gaia, is the personification of the Earth and the primordial mother goddess. From the shapeless mass of Chaos, she emerged to create the world, bringing forth various elements of nature, including mountains, seas, and the sky. This act of creation established the foundation for all life, marking the transition from formlessness to the structured universe. Gaea's emergence symbolizes the nurturing and life-giving aspects of the Earth.
hyperechoic is a mass that has a dark appearance.
Dark Matter.
It is not believed to be, but there is still very little known about dark matter, so maybe,
Depending on what source you use for reference, it seems somewhere between 68% and 75% of the universe is dark energy accelerating the expansion, and somewhere between 25% to 32% is matter (dark or visible) exerting gravitational force which would notionally be resisting that expansion. Note that dark energy itself has mass (per mass-energy equivalence) so one needs to be cautious if the subject in question is the overall mass of the universe or what fraction of the overall mass tends to oppose that expansion - which dark energy does not.
Neutrinos are attractive candidates for dark matter because they are known to interact weakly with other particles, making them difficult to detect. They are also abundant in the universe and have non-zero mass, which could contribute to the overall mass content of the universe. However, current evidence suggests that the combined mass of neutrinos is not enough to account for all of dark matter.
Current theory states that it's "dark energy".
Easter vigil
These helped predict the existence of dark matter. Dark matter in astronomy is used appear as the result of mass, where no actual mass can be seen.
Yes, dark matter has a lot of mass. It makes up about 20% of the universe (much more than regular matter). Since it has mass, it also has energy. In fact, dark matter's mass is the main reason we even know it exists. Astrophysicists can observe its gravitational effects, though it is extremely hard to detect in any other way.