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tmv3v
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Is there a possibility that dark energy comes from mass that travels faster than the speed of light, making its mass imaginary?
tiny-tim said:hi tmv3v! welcome to pf!
e = mc² (and the c² is nothing more than a conversion factor),
so if the mass was imaginary, wouldn't the energy be imaginary also?
Mordred said:couple of other points nothing moves faster than the speed of light and particles with mass cannot reach light speed. Dark energy is a mysterious energy that is attributed to causing expansion. No one knows where it comes from IE its source. However it is often attributed to being the energy driving expansion.
Dark matter has nothing to do with dark energy by the way, also its slower than relativistic speeds
there are numerous articles in the FAQ subforum that would be handy for you
Ned Wrights FAQ has some useful information you may want to check out
also http://www.astro.ucla.edu/~wright/cosmology_faq.html
myself and other PF members wrote the article contained in this thread its lengthy as it covers expansion principles, redshift and cosmic distance ladder in one overall article. However you will find some info on dark energy in its contents as well.
https://www.physicsforums.com/showthread.php?t=685265
the article is easily found here.
Welcome to the forum
tiny-tim said:hi tmv3v! welcome to pf!
e = mc² (and the c² is nothing more than a conversion factor),
so if the mass was imaginary, wouldn't the energy be imaginary also?
Dark matter is a type of matter that has not yet been directly observed, but is thought to make up a significant portion of the total mass in the universe. It is called "dark" because it does not emit, absorb, or reflect light, making it invisible to traditional telescopes.
Scientists have inferred the existence of dark matter through its gravitational effects on visible matter. The rotation speeds of galaxies, for example, cannot be explained by the visible matter alone and require the presence of additional mass, which is thought to be dark matter.
Dark energy is a mysterious force that is thought to be the cause of the accelerating expansion of the universe. It is called "dark" because, like dark matter, it cannot be directly observed with telescopes.
Dark energy and dark matter are two separate phenomena. Dark matter is a type of matter that has mass and exerts gravitational effects, while dark energy is a force that is thought to be causing the expansion of the universe to accelerate. They are both called "dark" because they cannot be directly observed with telescopes.
Scientists are using a variety of methods to study dark matter and dark energy, including astronomical observations, particle accelerators, and computer simulations. Some experiments, such as the Large Hadron Collider, are looking for direct evidence of dark matter particles. Other experiments, such as the Dark Energy Survey, are observing the distribution of galaxies and the expansion of the universe to better understand dark energy. The study of dark matter and dark energy is an active area of research in cosmology and particle physics.