My sphere of existence, traveling thru the universe at the speed of light, live on the tweeties. „In general relativity, the future light cone is the boundary of the causal future of a point and the past light cone is the boundary of its causal past.“ (Wikipedia)
From the moment of my birth, light has been racing from Earth at 5.9 billion miles per hour, and light has been reaching us from a likewise increasing distance of origin -- this ever-growing sphere of potential causality is my light cone.
I'm [René], and today… My light cone contains [41 Stars. 42nd (!) star Capella will be reached in 10 months]. @5point9billion is a Twitter bot that tells you when you reach the stars, in realtime. More info in this blog post.