The oldest objects in the Milky Way are the so-called globular star clusters, spherical clusters of hundreds of thousands of stars. The most recent calculations reveal globular star clusters to be about 13billion years old, although determining their age is difficult and the figures are still uncertain. The Milky Way itself could be as much as 800million years younger. According to the latest findings, the universe came into being 13.7 billion years ago and the first stars lit up 400 million years after the Big Bang. This suggests that the Milky Way cannot be older than 13.3 billion years.