## Beyond our universe lies our future

LoopdoctorsApril 28March 11Level I Student

It is hard to take space-time seriously. What is the consequence for the four-dimensional shape of our universe? For better understanding, this article uses 2-d sections to visualize Einstein’s first model. This static model used a cosmological constant which Einstein later withdrew. The authors present a new 3-sphere...

## Our universe stays 11 billion years old

LoopdoctorsMarch 17April 200Level I Student

The age of our universe depends on the estimate of the Hubble constant. Recent measurements (WHAP, Planck, ed) would mean an age of more than 14.5 billion years. This article takes a different approach, based on Noether’s theorem on energy conservation and the comoving coordinates of Robertson and Walker. The age now...