In corn, purple kernels (P) are dominant to yellow kernels (p). You have a plant with an unknown genotype that has a phenotype of purple kernels. You perform a testcross and find that all of the offspring are purple.
The layout of the solar system, including the Oort Cloud, on a logarithmic scale. Credit: NASA. In the furthest reaches of the Solar System is the Oort Cloud; a theorized cloud of icy objects that could orbit the Sun to a distance of 100,000 astronomical units, or 1.87 light-years away.
The sun (which, incidentally, is only a medium-size star) is larger than any of the planets in our solar system. Its diameter is 1,392,000 kilometers (864,949 miles). Earth's diameter is only 12,756 kilometers (7,926 miles).