Question: Astronomers know the ages of rocks (the time since they solidified) by radiometric dating. Which one of the following solid objects are the oldest in the solar system, dating back 4.55 billion years ago? Need Assignment Help? Question options: An old, dried wad of gum (found under your seat in the LCC planetarium). The oldest Earth rocks (naturally found on Earth). Your astronomy professor. The oldest meteorites (found on Earth). Question 38 (2 points) Listen Which one of the following statements is FALSE about ALL Jovian planets? Question 38 options: They all have rings and many moons. They are mainly composed of hydrogen, helium and hydrogen compounds. They are all more massive than the Earth. They are all denser than the Earth.