Ancient Skies on Instagram: "This image from the James Webb Space Telescope shows over 800,000 galaxies and the blue highlights where dark matter is concentrated. Dark matter is the invisible structure holding galaxies together and makes up about 27% of the universe. Ordinary matter is only about 5%, while the rest is dark energy. Captured using JWST’s NIRCam over 255 hours as part of the Cosmic Evolution Survey, this observation helps astronomers better understand how the universe is structured