As far as i remember, 'emergency landing' warning is scripted and is inevitable, however you should land after that, not blow up of course. Maybe you suffered too much damage in the meteor shower?
To survive the shower with minimal damage, set the speed to lowest, aim at zenith and hold fire button (targeting system in asteroid defence mode will aim for you, you just need to fire non-stop until you're clear).
Did you install my
script fix (
http://forum.1cpublishing.eu/showthread.php?t=13662) by the way?