The shape of the cosmos depends on a balance of two competing forces: the pull of gravity and the expansion driven by dark energy. Columnist Leah Crane explores what observations tell us about how much universe is out there and whether it’s shaped like a shee…
The Carina Nebula viewed by the Hubble Space Telescope
NASA/ESA/M. Livio, The Hubble Heritage Team & Hubble 20th Anniversary Team (STScI)
Start off in any direction and fly through the universe… [+6279 chars]
