black holes are
gravity :)
Same
As far as we know - there is "no outside of the universe", so nothing.
Hydrogen is the most abundant element in the universe.
most matter that exists in the universe is in the plasma state
Every object in the universe exerts a gravitational pull on every other object in the universe. Most of the time, however, these forces are of inconsequential strength. For Venus, the most significant object of influence is the Sun.
Yes. In fact, every object in the universe exerts a gravitational pull on every other object in the universe, but most of them are too small to notice.
[object Object]
The mass of an object remains the same everywhere in the universe.
yes, but most gravitational pulls are only noticeable if the object is enormous, for example, Earth.
The Universe
gravity :)
According to the String Theory. There is a 1D object called a 'string'. It is approximately 0.000000000001 yoctometers.
No. It is the mass that stays the same everywhere in the universe.
Yes it does.
inertia
Light.