The Solar System is home to millions of small bodies: asteroids, comets, and dwarf planets. Most asteroids are found in the belt located between Mars and Jupiter.
Dwarf planets, such as Pluto, occupy the outer regions of the Solar System, often near the Kuiper Belt.
Comets, icy and distant, mostly originate from the Kuiper Belt and the vast Oort Cloud, from which some dive toward the Sun, forming a bright tail.
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Dwarf Planets: The Forgotten Worlds of the Solar System 
Physical Composition of Trans-Neptunian Objects in the Kuiper Belt
Haumea and its Moons: A Singularity of the Solar System
The Enigma of the Oort Cloud: Indirect Evidence and Uncertainties
Sedna: Between the Kuiper Belt and the Oort Cloud
Quaoar: The Dwarf Planet Defying the Roche Limit with its Rings
The 40 largest objects in the solar system
Pluto's Satellites: Strange Companions in the Dwarf Planet's Shadow
Ceres: Boundary Between Asteroid and Dwarf Planet
Pluto and its Moons: Charon, Nix, Hydra, Styx, and Kerberos
Eris: The Dwarf Planet at the Edge of the Solar System
Gonggong: An Eccentric Witness to Distant Perturbations 
Meteor Showers: Perseids, Leonids, Geminids... 
Interstellar Comets: When the Universe Sends its Messengers 
The Asteroid Bennu: The Building Blocks of Life 
Formation of Asteroids: From Cosmic Dust to Small Rocky Bodies 
The Asteroid Bennu: A Rotating Rubble Pile 
Yarkovsky Effect on Asteroids 
Arrokoth, the
red snowman 
The Kirkwood Gaps in the Main Asteroid Belt 
What is the asteroid belt? 
The Great Comet of 1577 Shattered the Crystal Spheres 
The Invisible Threat of Asteroids: From Pebbles to Flying Mountains 
Meteorites: Messengers from Space and Witnesses of the Solar System 
Comet Hartley 2: The Icy Heart Scrutinized by Deep Impact 
When Two Asteroids Collide: The Strange Case of P/2010 A2 
2005 YU55: The 400 m Asteroid that Grazed Earth 
Asteroid Apophis: The Perfect Candidate for a Global Impact? 
Vesta: The Colossus of the Asteroid Belt 
From Asteroids to Planets
2012 and Comet ISON: Between Promise of Brilliance and Disappointment 
Giants of the Asteroid Belt: Classification by Size 
Impact
craters on Earth 
Online Simulator: Orbits of Asteroids 
Online Simulator: Orbits of Near-Earth Asteroids 
Rosetta has a date with a comet 
Near-Earth Asteroids: An Underestimated Threat to Our Planet? 
Asteroid 2009 DD45: A Reminder of Planetary Vulnerability to Asteroids 
Strange Resemblance Between Comet Hartley 2 and Asteroid Itokawa 
Earth's Trojan Asteroids: Companions Sharing Our Orbit 
Turin Scale: A Classification of Impact Risks 
The Nice Model: Towards an Explanation of the Late Heavy Bombardment 
NEO Monitoring: The Case of Asteroid 2012 LZ1 
Comet Lemmon (C/2012 F6): The Southern Hemisphere's Green Visitor 
Asteroid 2012 DA14 passed on February 15, 2013 
Near-Earth Asteroid 2012 BX34: A Record Close Approach to Our Planet 
Didymos and Dimorphos: The First Asteroid Moon Moved by Humanity 
Chariklo and its rings: a surprising centaur asteroid 
Rosetta and Philae: A Feat 500 Million Kilometers from Earth 
The Passage of Comets: Eccentric Orbits at the Heart of the Solar System 
Vesta and its Curiosities: The Enigma of the Torn South Pole 
Meeting the Asteroids: The Main Belt 
Orbits of Near-Earth Asteroids: When Asteroids Brush Past Earth 
Wandering
comets 
Asteroid Pallas: A Giant of the Main Belt 
Asteroid Juno: an unknown giant of the solar system 
Ganymed (1036): Near-Earth and Mars-crosser 
Earth's quasi-satellite: 2016 HO3