Three adventurers have begun an ambitious journey across the Atlantic Ocean in a hydrogen balloon, aiming to land in Europe.

<img alt="The Atlantic Explorer balloon flying." height="349" src="https://i.cbc.ca/ais/c7a04803-3cb2-41d4-a0c1-0402e07461cd,1780684230650/full/max/0/default.jpg?im=Crop%2Crect%3D%280%2C83%2C1600%2C900%29%3BResize%3D%28620%29" title="The Atlantic Explorer balloon flying over Cape Breton." width="620" /><p>The balloon and its three pilots are on a big mission to cross the Atlantic Ocean, landing somewhere in Europe.</p>