Dark matter - Wikipedia In astronomy, dark matter is an invisible and hypothetical form of matter that does not interact with light or other electromagnetic radiation Dark matter is implied by gravitational effects that cannot be explained by general relativity unless more matter is present than can be observed Such effects occur in the context of formation and evolution of galaxies, [1] gravitational lensing, [2
Dark matter | Definition, Discovery, Distribution, Facts | Britannica dark matter, a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity Dark matter makes up 30 1 percent of the matter-energy composition of the universe; the rest is dark energy (69 4 percent) and “ordinary” visible matter (0 5 percent) Originally known as the “missing mass,” dark matter’s existence was first inferred by
What Is Dark Matter? | NASA Space Place – NASA Science for Kids Dark matter is stuff in space that has gravity, but it is invisible and isn’t like anything else we know about Dark matter makes up about 27% of the universe Dark energy makes up roughly 68% of the universe We don’t know much about dark energy either, but we do know there is a lot of it Together, dark matter and dark energy make up
What is dark matter? | Space Dark matter makes up a large portion of the universe, but we've never seen it Here's what we know, what it might be, and why it could change everything More than 80% of the universe's matter is
What Is Dark Matter? - Science Notes and Projects Dark matter is an invisible type of matter that exerts gravitational effects on light and regular matter Dark matter is a hypothesized form of matter that does not interact with light or other forms of electromagnetic radiation, but exerts gravitational effects on visible matter, light, and the structure of the universe Scientists calculate this elusive form of matter makes up approximately
Dark matter - CERN Dark matter candidates arise frequently in theories that suggest physics beyond the Standard Model, such as supersymmetry and extra dimensions One theory suggests the existence of a “Hidden Valley”, a parallel world made of dark matter having very little in common with matter we know If one of these theories proved to be true, it could
What Is Dark Matter and Why Is It Important? | Extremetech Thus, dark matter's gravitational impact is extremely spread out and, it turns out, can only be observed when we look at the large-scale distribution of visible matter in the universe: things like
What Is Dark Matter? An Introduction to One of Science’s Biggest Mysteries Dark matter is one of the universe’s most fascinating mysteries Scientists believe it makes up about 27% of the universe, yet we can’t see or touch it Unlike stars, planets, or any visible matter, dark matter doesn’t emit, absorb, or reflect light, making it practically invisible But while we can’t directly detect dark matter, its
What Is Dark Matter? - Scientific American Dark matter should really be called transparent matter because, as with all transparent things, light just passes through it Nevertheless, its nature is far from transparent Physicists and