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<p>and <a href="page.php?w=spaceplane">spaceplane</a>s.</p>

<p>The engineering aspects of flight are the purview of <a href="page.php?w=aerospace_engineering">aerospace engineering</a>. It has three subfields:<br/>
* <a href="page.php?w=aeronautics">aeronautics</a> &mdash; the study of vehicles that travel through the atmosphere.<br/>
* <a href="page.php?w=astronautics">astronautics</a> &mdash; the study of vehicles that travel through space.<br/>
* <a href="page.php?w=ballistics">ballistics</a> &mdash; the study of the flight of projectiles.</p>

<p><big> Types of flight </big></p><p>
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