Yes, planets do effect life on earth. Earth Experiences Rich planetic effects of SUN and MOON (sea water – gravity effect On No moon day and full moon day) and to some extent the Space Radiation, same way as per physics and gravitational force / law, somehow Mars, Venus, mercury, Jupiter, Saturn, and psuedoplanets (as per hindu astrology) Rahu and Ketu (moon ‘s north node and south node ) have also direct effect on us . This is not a belief but a fact and truth. Moon has mostly effects on our Atmosphere and Hydrosphere. This has been approved by science as well. Hydrosphere experiences severe tides during full moon and new moon days.
Astrology is about observing the planets. This is not to say that the planets (or the signs) cause anything to happen. What we observe is synchrony – that things are taking place in sync. One movement is flowing throughout our space, heavens, and Earth. Instead of causing, the planets indicate things, describing what is already taking place. But for the sake of convenience, astrologers use phrases like, “your Venus makes you like this,” or “his Mars made him act like that.” Please note that this is only for convenience in communicating. Astrologers know that the planets don’t force us to do anything, any more than your 5:00pm clock forces you to stop working. But you do stop working when the clock strikes 5:00pm, don’t you? And so you pay careful attention to that clock, because that clock will show you when it’s time to go home from work. But the clock never forced you to leave work, neither did it ever seal your fate. In the end, you decide when to leave work.