Answer:
The reason why astronomers interested in building observatories capable of detecting neutrinos, cosmic rays, and gravitational waves is because:
d. These things are not forms of light, and therefore can provide different types of information than light about objects that emit the
Step-by-step explanation:
Cosmic rays are composed of pure energy that travels at the speed of light and that can be measured according to the amount of energy they have as well as the speed they travel.
Neutrinos are also composed of energy however they are specifically composed of radioactive decays. This allows scientists to measure them even though they can go through almost everything without being noticed.
Gravitational waves are disturbances generated in the curvature of space that expand from their origin at a certain rhythm or "force" that travels at the speed of time.
So because all of them can be measured without being light they are optimal to be found in the space to create more knowledge about the universe.