We share a little more in common than just the sun. Our solar system is moving through the galaxy as a unit. That transit has a period around 26,000 years. The solar system as a unit experiences influences from its surroundings. The periodic changes we can measure in ice and volcanic flows are earth are likely measurable in similar fashion on other planets in our solar system.
"We share a little more in common than just the sun. Our solar system is moving through the galaxy as a unit. That transit has a period around 26,000 years. The solar system as a unit experiences influences from its surroundings. The periodic changes we can measure in ice and volcanic flows are earth are likely measurable in similar fashion on other planets in our solar system."
...you're on the right track.