&lt;p&gt;The world&#039;s most expensive and sophisticated observatory, Alma, has come to life in Chile&#039;s Atacama desert. What will it see and how will it work?&lt;/p&gt;&lt;div class=&quot;author&quot;&gt;&lt;a href=&quot;http://www.guardian.co.uk/profile/christineoliver&quot;&gt;Christine Oliver&lt;/a&gt;&lt;/div&gt;&lt;br/&gt;&lt;p style=&quot;clear:both&quot; /&gt;