Yes. When objects are in orbit around each other, there is a strong pull of gravity between them. For example, we commonly say that the Moon is in orbit around the Earth. However, the Moon pulls back on the Earth as well. This changes the Earth a little. One way we see this happening is the ocean tides.
An annuity is a long term investment that is issued by an insurance company designed to help protect you from the risk of outliving your income. Through annuitization, your purchase payments (what you contribute) are converted into periodic payments that can last for life.
An annuity is a series of income payments made at regular intervals by an insurance company in return for a premium or premiums you have paid. The most frequent use of income payments from an annuity is for retirement. An annuity is neither a life insurance nor a health insurance policy. It is not a savings account or a savings certificate. You should not buy an annuity for short-term purposes.