05. How big, how long, how deep and how wide is space? How big is known space? (A K2S Question)

From The Space Library

Known space was recently defined by the Wilkinson microwave anisotropy probe (W-MAP) spacecraft which sent data back to scientists on Earth, who were able to determine that our observable Universe has a radius of about 13.7 billion light years plus or minus 200 million light years. This is an incredible achievement for humans—from our position on Earth in a galaxy called the Milky Way, scientists called cosmologists have been able to gauge the size of our entire Universe for the first time. Amazing stuff!

---

Answer provided by Jim Zebrowski

Question and Answer extracted from the book Kids to Space - by Lonnie Schorer

Buy This Book Click here