The heliosphere boundary.
The heliopause marks the outer boundary of our solar system. This is where the solar wind from the Sun meets the interstellar medium of space.
No satellite has left our solar system. The farthest human-made object from Earth is the Voyager 1 spacecraft, which has entered interstellar space but is still within the boundary of our solar system.
the rest of the universe and other solar systems
The Solar System has no predefined limits.Generally the limit of the Solar System and interstellar space is at a place called the Roche limit where our own Sun's gravitational influence is diminished by another - usually star - interstellar object.This boundary is generally accepted to be the mean distance between our Sun and Alpha Centauri A or about 2 light years from the Sun.
Voyager 1 and Voyager 2 have both left the heliosphere, but neither has left the solar system. The edge of the solar system is considered to be the outer boundary of the Oort Cloud, The exact width of the Oort Cloud is not known, but its estimated that it would take Voyager 2 about 300 years to reach the inner boundary of it. To reach the outer boundary of the Oort Cloud, truly leaving the solar system, would take Voyager 2 something like 30,000 years.
The outer boundary of our solar system is defined by the heliopause, where the solar wind meets the interstellar medium. It is determined by the point at which the pressure from the solar wind is balanced by the pressure from the interstellar medium. This boundary was reached by the Voyager 1 spacecraft in 2012, making it the first human-made object to enter interstellar space.
Solar means space and the Solar System is a system (with the moon, sun, planets, stars, etc.) so the Solar System is really a Space System.
FALSE. The outer edge of the "Oort Cloud" of comets marks the end of the Solar System.
The solar system ends at the heliopause, which is the boundary where the Sun's influence ends and interstellar space begins. Beyond this point, other celestial bodies such as stars and galaxies exist.
That depends on what definition of first you mean. A solar system is in a galaxy and a galaxy is in space. So the solar system is smallest and space is largest.
Outer space is much bigger than the solar system.
In order from smallest to largest: Solar System, Galaxy, and Space.