Kuiper Belt

TECHNICAL DEFINITION

The Kuiper Belt is a circumsolar disc of icy bodies extending from Neptune's orbit (about 30 AU) to approximately 50 AU from the Sun, containing numerous small solar system bodies, including dwarf planets like Pluto, and is a source of short-period comets.

BACKGROUND

The National Aeronautics and Space Administration is an independent agency of the U.S. federal government responsible for the United States' civil space program and for research in aeronautics and space. Headquartered in Washington, D.C., NASA operates ten field centers across the U.S. and is organized into three mission directorates: Human Spaceflight, Research and Technology, and Science. Established in 1958 amid the Space Race, NASA succeeded the National Advisory Committee for Aeronautics (NACA) to give the U.S. space program a distinct civilian orientation focused on peaceful applications. Since then, it has led most American spaceflight programs, including Project Mercury, Project Gemini, the Apollo program, Skylab, the Space Shuttle, the International Space Station (ISS) and the ongoing multi-national Artemis program.

SYNONYMS & ALIASES

• KBOs
• Trans-Neptunian Objects
• TNOs
• Icy Disk

USAGE NOTE

Many comets originate from the Kuiper Belt.

DEVELOPERS

Organizations developing technology related to Kuiper Belt.

• NASA (National Aeronautics and Space Administration)

  NASA's New Horizons mission was the first to explore the Kuiper Belt, conducting flybys of Pluto in 2015 and the Kuiper Belt Object (KBO) Arrokoth in 2019. The agency funds and manages missions and research dedicated to understanding the outer Solar System.

• Johns Hopkins University Applied Physics Laboratory (APL)

  APL designed, built, and operates the New Horizons spacecraft for NASA. The laboratory specializes in developing spacecraft and instruments for deep space exploration, including missions to the outer planets and the Kuiper Belt.

• Southwest Research Institute (SwRI)

  SwRI is home to the principal investigator of the New Horizons mission, Dr. Alan Stern. The institute leads the science team and has developed several scientific instruments for the spacecraft, playing a central role in analyzing data from the Kuiper Belt.

• Vera C. Rubin Observatory

  Currently under construction, the Rubin Observatory's Legacy Survey of Space and Time (LSST) is expected to discover and catalog tens of thousands of KBOs. This will create a comprehensive map of the outer Solar System and revolutionize our understanding of its structure and history.

• Lowell Observatory

  The site of Pluto's discovery in 1930, Lowell Observatory continues to conduct significant research on the Kuiper Belt. Its astronomers use advanced ground-based telescopes to discover and characterize KBOs and other trans-Neptunian objects.

• ESA (European Space Agency)

  ESA collaborates on planetary science missions and develops technologies for deep space exploration. Its upcoming Comet Interceptor mission is designed to visit a pristine, long-period comet, which could potentially originate from the Kuiper Belt or Oort Cloud.

• Caltech / Jet Propulsion Laboratory (JPL)

  Researchers at Caltech, such as Mike Brown's team, are leaders in the discovery of large KBOs. JPL, which Caltech manages for NASA, operates the Deep Space Network (DSN), the essential communications system for missions like New Horizons that explore the Kuiper Belt.