# A Study of Notation #143

###### 1.38634×10129

Here we will begin an in-depth study of what the universe is doing between .60116 seconds and 1.2023 seconds.  At the one second mark between notations 143 and 144, this calculation is within one-percent of the laboratory measurement of the speed of light in a vacuum. This link goes to the horizontal chart of all 202 notations between the 143rd and 144th notations.

Study All The Notations

Begin with Notation #0

Notes:

180,212.316 km  The moon-to-earth distance is 356,500 km (221,500 mi) at the perigee to 406,700 km (252,700 mi) at apogee.  At the 143rd notation we are about half way out to the moon at both its closest and its most distance point from the earth.

2.4268×1034 kg  In the analysis of six groups of Planck units, at Notation 101 the mass is  5.5181×1021 kilograms which was compared to the mass of the earth, 5.972 × 1024 kg, or the mass of the moon, 7.34767309×1022 kg.  At Notation 137 the Planck Mass is 3.7920×1032 kilograms which was larger than from the mass of the sun (1.989×1030 kilograms) and greater than the mass of the entire solar system (1.992×1030kg).

The supermassive black hole (SMBH) at the center of the Milky Way, called Sagittarius A*,  has a mass estimated to be no less than a million and possibly greater than a billion times our Sun.

The smallest and densest stars known to exist are neutron stars. Wikipedia says, “With a radius on the order of 10 km, they can, however, have a mass of about twice that of the Sun,” so the mass of the universe at 1.2023 seconds is within the known ranges of current science.

We will consult with the experts on neutron stars to see how their numbers compare.