Religious symbol of Astronism called the Vendox.
Astronism is a naturalistic religion and organised philosophy that belongs a wider set of religions called the Astronic tradition which sits alongside the Abrahamic, Dharmic, and Taoic traditions, but it is the oldest religious tradition out of all of these as it traces its origins back to the Upper Palaeolithic period of the Stone Age about 40,000 years ago.
Astronism is based upon a worldview called cosmocentrism and its main tenets are astrosis and cosmosis, but it is a large religion with a huge variety of ideas and beliefs, most of which are philosophical and naturalistic.