Spaceflight 🚀<p>Liquid and solid propellant 🔥 <a href="https://spacey.space/tags/rocket" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rocket</span></a> engines feature low mass efficiency due to the thermodynamic limitations and extremely low efficiency at small thrust. The electric 🔋 thrusters do not pose limits on the propellant exhaust velocity and the propellant mass consumption may be very low <a href="https://www.nature.com/articles/s41467-017-02269-7" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41467-017</span><span class="invisible">-02269-7</span></a></p><p><a href="https://spacey.space/tags/ElectricPropulsion" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricPropulsion</span></a> <a href="https://spacey.space/tags/PlasmaThruster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PlasmaThruster</span></a> <a href="https://spacey.space/tags/IonThruster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>IonThruster</span></a> <a href="https://spacey.space/tags/HallThruster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HallThruster</span></a></p>