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A long-exposure image captures circular star trails above telescope domes illuminated in red light on a dark mountain. A golden glow on the horizon marks distant city lights. A white structure with a domed top on a rocky outcrop below a star-filled night sky. The Milky Way stretches vertically in a luminous band. Faint green glow tints the curved horizon. Meteors from the Geminid meteor shower streak across the sky above the Nicholas U. Mayall 4-meter telescope at Kitt Peak National Observatory (KPNO). The Carousel Lens, an alignment consisting of 1 foreground galaxy cluster (the ‘lens’) and 7 background galaxies spanning immense cosmic distances through the gravitationally distorted space-time around the lens, as seen through the Hubble Space Telescope. A person in protective gear descending the stairs next to LZ's central detector, the time projection chamber, in a surface lab clean room before delivery underground. The SOAR Telescope on Cerro Pachon in Chile. A teal cosmic map of the universe on a black background. Earth is at the center of this thin slice of the full map. There is a magnified section showing the underlying structure of matter in our universe. Cover image for the 2023 P5 Report. An illustration of a blue and purple light coming out of a black hole. Two light beams are jutting out from the center toward the edges of the frame. The beam on the left is filled with moving blue orbs and the beam on the right is filled with two larger orbs containing small galaxy depictions. Telescopes at the South Pole against starry skies. NGC 520, one of the largest and brightest galaxies in the Siena Galaxy Atlas. This artist’s rendering shows LuSEE-Night atop the Blue Ghost spacecraft scheduled to deliver the experiment to the far side of the moon. A 3D map of space, with streams of light pointing in different directions from a central focal point. Researchers took detailed images in 20 different directions on the sky, creating a 3D map of 700,000 objects and covering roughly 1% of the total volume DESI will study.