"kinetic energy, form of energy that an object or a particle has by reason of its motion."
https://www.britannica.com/science/kinetic-energy
"This means that the Milky Way Galaxy is travelling through space at an amazing speed of 2.1 million km/h"
https://www.chaosmosnews.net/2019/02/24/milky-way-moving-universe-2-1-million-kilometers-per-hour/
"The Sun orbits the center of the Milky Way, bringing with it the planets, asteroids, comets, and other objects in our solar system. Our solar system is moving with an average velocity of 450,000 miles per hour (720,000 kilometers per hour)."
https://solarsystem.nasa.gov/solar-system/sun/in-depth/
"An unseen power is prowling throughout the cosmos, driving the universe to expand at a quickening rate. This relentless pressure, called dark energy"
https://www.jpl.nasa.gov/images/dark-energy
"Dark energy has the cosmoslogists scratching their heads. Observations taken by NASA's Hubble Space Telescope and future space telescopes will be needed in order to determine the properties of dark energy, which makes up about 70 percent of the universe."
https://www.nasa.gov/missions/deepspace/f_dark-energy.html
"Astronomers think that the expansion of the universe is regulated by both the force of gravity, which acts to slow it down, and a mysterious dark energy, which pushes matter and space apart. In fact, dark energy is thought to be pushing the cosmos apart at faster and faster speeds, causing our universe's expansion to accelerate."
https://www.nasa.gov/mission_pages/galex/pia14094.html
"Dark energy, meanwhile, is the name we give the mysterious influence driving the accelerated expansion of the universe. What these substances are and how they work are some of the major challenges facing modern astronomers."
https://www.cfa.harvard.edu/research/topic/dark-energy-and-dark-matter
"Scientists claimed in a series of articles published in February that black holes are the likeliest source of dark energy, which is thought to make up the missing 68% of the universe.
A group of researchers across nine countries recently observed how supermassive black holes at the centers of various galaxies are growing more than expected, which aligns with gravitational theories put forth by Einstein, Imperial College London reported."
https://dailycaller.com/2023/03/01/scientists-think-black-holes-create-dark-energy/