Question

what is dark energy and dark matter

Answer 1

Dark Energy is an unknown form of energy eventually created in before time.

Dark matter is a hypothetical form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density. 

hope you got that
Mark it as brainliest.!!

Answer 2

hey mate ,

here is your answer :)

Dark matter originates from our efforts to explain the observed mismatch between the gravitational mass and the luminous mass of galaxies and clusters of galaxies. The gravitational mass of an object is determined by measuring the velocity and radius of the orbits of its satellites, just as we can measure the mass of the sun using the velocity and radial distance of its planets. The luminous mass is determined by adding up all the light and converting that number to a mass based on our understanding of how stars shine.

Dark energy, on the other hand, originates from our efforts to understand the observed accelerated expansion of the universe. In a nutshell, current theory cannot explain the acceleration. One speculative possibility is that the acceleration is a consequence of another new form of matter, nicknamed dark energy, which has hitherto gone undetected. It is called "dark" because it must necessarily be very weakly interacting with regular matter--much like dark matter--and it is referred to as energy because one of the few things we are certain of is that it contributes nearly 70 percent of the total energy of the universe.