They are excellent! I used one of these while working with my Confirmation students. We had a lot of fun exploring deep space, as well as the depths of the ocean. The focus was on the Nicene Creed: "of all things visible and invisible". In exploring both universes, they came across some truly amazing things. Bioluminescence, fish in the darkest recesses of the oceans that use light to attract their prey or issue warnings. There are also things they didn’t … correction … couldn’t see, like Dark Energy, for example. According to NASA, more is unknown than is known. We know how much dark energy there is because we know how it affects the Universe's expansion. Other than that, it is a complete mystery. But it is an important mystery. It turns out that roughly 68% of the Universe is dark energy. Dark matter makes up about 27%. The rest - everything on Earth, everything ever observed with all of our instruments, all normal matter - adds up to less than 5% of the Universe. When it comes to the oceans, we know only 3%.
Who doesn't love a mystery?! Man tries to rise to the level of God. Ultimately, man cannot create something from nothing. We are surrounded by an amazing universe ... why not sit back, probe its depths and simply be amazed.
Thanks for these awesome reflections.
E=mc2 means that matter is energy and energy is matter. What we think of as matter is what affects the expansion of the universe because it has mass and a gravitational pull. What we think of as energy has no mass and therefore no gravity associated with it and cannot affect the expansion of the universe.
It turns out that roughly 68% of the universe is dark energy. Dark matter makes up about 27%.
Does he explain how these numbers were determined?