Dark Matter, although in considerably less abundance than Dark Energy, still makes up 30% of our universe.

Dark Matter is an attractive force, similar to that of gravity, which holds matter together.

Dark Matter plays a vital role in the formation of galaxies. This is primarily because of the fact that Dark Matter acts as an Invisible Glue that can hold galaxies together.

Despite the fact that both Dark Energy and Dark Matter are opposite in nature, there is one thing that is common between them: invisibility.

Neither Dark Matter nor Dark Energy reflect, emit, or absorb ANY sort of light. This is the main reason why they both are incredibly difficult to detect.

What this means is that they are both completely hidden, and the only way that we, as humans, know of their presence is through their effect on the Gravity. 

Over time, various astronomers have studied supernovae and distant galaxies in order to observe the expansion of the universe. 

While researching, these scientists still had a set of expectations. One of these expectations was that the universe expanded at a constant rate.

Much to their surprise, they noticed that the universe was expanding exponentially. This is very significant because up until now, scientists were under the assumption that the universe was not able to expanding this rapidly.

Dark Energy serves as the reason why the universe is expanding exponentially and not linearly.

To conclude:

Dark Matter is an attractive force that holds matter together while Dark Energy is a repulsive force that pushes matter outwards.

They both are very difficult to detect because they don’t emit, absorb, or reflect light at all. 

Despite this, they are still very widely researched. Scientists we able to uncover that the universe is expanding exponentially instead of linearly due to the abundance of Dark Energy.

Overall, Dark Matter and Dark Energy are some of the most interesting occurrences in our universe, and we still have much to learn about them.

Articles:

• https://astronomy.com/news/2020/03/whats-the-difference-between-dark-matter-and-dark-energy
• https://phys.org/news/2015-03-dark.html

Videos:

• https://youtu.be/AAhWLN2qHGs
• https://youtu.be/QAa2O_8wBUQ