Description

Nasa

How big is this universe? Let's take a journey from Earth to the solar system, closest stars,the Milky Way and the observable universe.Along the way we will stop by the Oort cloud, Alpha Centaur i, radio sphere, Andromeda galaxy, Virgo super cluster and Laniakea. After watching these videos , you may be thinking, wow I'm part of this unimaginably large, possible infinite universe, that is potentially teeming with life. Although we feel that we are independent creatures roaming around,we're not. We 're in an intimate, inseparable symbiotic relationship with the world we live in.