Black hole I think that is right
A way of building knowledge about the world around us through observation and experimentation.
Answer:
<em>Scientists have observed that electromagnetic radiation has a dual "personality." Besides acting like waves, it acts like a stream of particles (called "photons") that have no mass. The photons with the highest energy correspond to the shortest wavelengths.</em>
Explanation:
Hope It Help
They would find out by studying hard and researching different things on which is more important
