About 56,400 results
Open links in new tab
  1. Dwarf planet - Wikipedia

    A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the …

  2. Pluto & Dwarf Planets - Science@NASA

    Apr 29, 2025 · Dwarf planets like Pluto were defined as objects that orbit the Sun, and are nearly round, but have not been able to clear their orbit of debris. So far, the IAU has only recognized …

  3. Dwarf planet | Definition, Characteristics, & Facts | Britannica

    dwarf planet, body, other than a natural satellite (moon), that orbits the Sun and that is, for practical purposes, smaller than the planet Mercury yet large enough for its own gravity to …

  4. What are dwarf planets, and how many are there? | Live Science

    Jul 5, 2025 · And how many dwarf planets are there? A dwarf planet is a celestial body that is smaller than a planet but bigger than an asteroid or other small rock in the solar system.

  5. Dwarf Planets in Our Solar System - Science Notes and Projects

    Jan 31, 2023 · According to the International Astronomical Union, a dwarf planet in our s olar system is a body that orbits the Sun (is not a moon), has sufficient mass to be round, yet has …

  6. Dwarf Planets in Our Solar System | Canadian Space Agency

    Because they are smaller, dwarf planets lack the gravitational forces needed to pull in and accumulate all of the material found in their orbits. Each known dwarf planet in our solar …

  7. What Is a Dwarf Planet? Definition and Key Examples

    Aug 27, 2025 · Our solar system is home to a wide array of celestial bodies. Understanding these diverse inhabitants requires precise classification. A dwarf planet is a celestial body that meets …

  8. Dwarf Planet – Definition & Detailed Explanation - Sentinel Mission

    Jan 6, 2026 · What is a Dwarf Planet? Dwarf planets are celestial bodies that orbit the sun but are not considered full-fledged planets. They are similar to planets in that they orbit the sun and …

  9. The Fascinating World of Dwarf Planets - sciencenewstoday.org

    Mar 18, 2025 · In this deep dive into the world of dwarf planets, we’ll journey through the solar system’s distant reaches, uncovering their mysteries, exploring their peculiarities, and …

  10. What Is a Dwarf Planet? - Defining These Celestial Objects

    According to the IAU definition, a dwarf planet must orbit the Sun, and have sufficient mass for a nearly round shape but has not cleared its orbital path of other debris. Notable examples …