Dark matter makes up about 27% of the universe's mass-energy content. It does not emit, absorb, or reflect light, making it invisible and detectable only through its gravitational effects on visible matter.
Dark energy is an unknown form of energy that is hypothesized to be responsible for the accelerated expansion of the universe. It constitutes about 68% of the universe's total mass-energy content.
FRBs are extremely powerful and brief bursts of radio waves originating from distant galaxies. They last only a few milliseconds but can release as much energy as the Sun does in a year.
The Great Attractor is a gravitational anomaly in intergalactic space that is drawing galaxies, including our own Milky Way, towards it. It is located in the direction of the Centaurus and Hydra constellations.
The Fermi Paradox arises from the apparent contradiction between the high probability of extraterrestrial life in the universe and the lack of evidence for, or contact with, such civilizations.