Back قائمة الأجسام الاصطناعية خارج النظام الشمسي Arabic Llista d'objectes artificials que surten del sistema solar Catalan Anexo:Objetos artificiales más lejanos Spanish Aurinkokunnan ulkopuolella olevat luotaimet Finnish Popis umjetnih predmeta koji napuštaju Sunčev sustav Croatian 太陽系を離れる人工物の一覧 Japanese Lista de objetos artificiais deixando o Sistema Solar Portuguese Lista obiectelor artificiale care au părăsit sistemul solar Romanian Список штучних космічних об'єктів, які покинули межі Сонячної системи Ukrainian 離開太陽系的人造物體列表 Chinese

List of artificial objects leaving the Solar System

Spacecraft that have left or are about to leave the Solar System are depicted as square boxes
Trajectories of distant spacecraft from launch to 2030
Top: Polar view; Bottom: Equatorial view
Plot of Voyager 2′s heliocentric velocity against its distance from the Sun, illustrating the use of gravity assist to accelerate the spacecraft by Jupiter, Saturn and Uranus, and finally its encounter with Neptune's Triton. Very massive planets attract spacecraft towards them, through the gravitational force; this force accelerates the spacecraft. If the spacecraft is not on a collision trajectory with the planet, and the spacecraft is travelling faster than the escape velocity of the planet, the spacecraft will travel past the planet gaining speed from the gravitational acceleration; this is called a gravity assist (or “gravitational slingshot”).

Several space probes and the upper stages of their launch vehicles are leaving the Solar System, all of which were launched by NASA. Three of the probes, Voyager 1, Voyager 2, and New Horizons are still functioning and are regularly contacted by radio communication, while Pioneer 10 and Pioneer 11 are now defunct. In addition to these spacecraft, some upper stages and de-spin weights are leaving the Solar System, assuming they continue on their trajectories.

These objects are leaving the Solar System because their velocity and direction are taking them away from the Sun, and at their distance from the Sun, its gravitational pull is not sufficient to pull these objects back or into orbit. They are not impervious to the gravitational pull of the Sun and are being slowed, but are still traveling in excess of escape velocity to leave the Solar System and coast into interstellar space.

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