collapsingin upon itself, till it crusself doo anoty, possibly to start t may be too il everyt t terial interactions, sot t is inert and dead, but very roomy. tion ist gravity is just rigical density” is ts’ term for it—and t it just t dimensions to alloo go on indefinitely.
Cosmologists in ter moments sometimes call t—teveryt rigivelyas closed, open, and flat.)Noion t o all of us at some point is: to t your ains?
would you find beyond?
tingly, is t you can never get to t’s notbecause it ake too long to get t because even ifyou traveled outraigely and pugnaciously, you an outer boundary. Instead, you o in t t adequately imagine, in conformance ein’s tivity (o in due course). For t it isenougo kno adrift in some large, ever-expanding bubble. Rat allo to be boundless but finite. Space cannot even properly be saidto be expanding because, as t and Nobel laureate Steven einberg notes, “solarsystems and galaxies are not expanding, and space itself is not expanding.” Rat. It is all someto intuition. Or as t J.
B. S. only queerer tis queerer than we can suppose.”
t is usually given for explaining ture of space is to try to imaginesomeone from a universe of flat surfaces, oEartter ’s surface, he would never find an edge.
eventually return to t ed, and terlyconfounded to explain ion in space asour puzzled flatlander, only we are flummoxed by a higher dimension.
Just as tand at ter and say: “t all began. termostpoint of it all.” e are all at ter of it all. Actually, kno for sure; prove it matically. Scientists just assume t really be ter of t t t t be till, actually know.
For us, t raveled in talk about—is amillion million million million (t’s 1,000,000,000,000,000,000,000,000) miles across. Butaccording to most t large—ta-universe, as it is sometimescalled—is vastly roomier still. According to Rees, t-years to tten not “en zeroes, not even , t going totrouble of trying to envision some additional beyond.