first spacecraft to return safely
... that two Russian tortoises were aboard the first spacecraft to return safely from a trip around the Moon?
... that two <a href="./Russian_tortoise" id="mwAc4" rel="mw:WikiLink" title="Russian tortoise">Russian tortoises</a> were aboard the <b id="mwAc8"><a href="./Zond_5" id="mwAdA" rel="mw:WikiLink" title="Zond 5">first spacecraft to return safely</a></b> from a trip around the Moon?<!--Special occasion hook for July 21-->