This first lecture of Unit 4 - Life in the Solar System - is a quick
tour of our Solar System reviewing the planets, dwarf planets, moons,
and small bodies that make up our celestial home. This lecture will
introduce many of the places we will be considering in detail over the
next two weeks, and which we'll find around other stars. Recorded live
on 2009 ... Show More
Sep 2009
Lecture 2: Astronomical Numbers
An introduction and review of the basic notation and physical units we will be
using throughout this course. In particular, we will be using the
Metric (SI) system for lengths, masses, times, and temperatures, and
special astronomical units for distances (AU and Light Years) and ... Show More
43m 56s
<p>La durée de vie d'une étoile peut nous renseigner sur sa composition et sur l'existence éventuelle de la vie dans le cosmos. mais, en dehors du Soleil, il est assez difficile de déterminer l'âge d'une étoile.</p><br><p>L'importance de la masse</p><br><p>En évaluant, grâce à la ... Show More
