Condensation trails at an altitude of about 90 km left of the third stage of the rocket "Proton" in the morning sky. Sun rays already illuminate condensed at high altitude rocket fuel combustion, but the sky was still dark, so you should contrast.
<a href="//commons.wikimedia.org/wiki/User:%D0%98%D0%B3%D0%BE%D1%80%D0%B5%D0%B2%D0%B8%D1%87" title="User:Игоревич">Игоревич</a>
<span class="int-own-work" lang="en">Own work</span>