Mastodawn

Outstanding production; One of the best movies I ever watched

Pilot Amelia Rennes (Felicity Jones) and scientist James Glaisher (Eddie Redmayne) find themselves in an epic fight for survival while attempting to make discoveries in a gas balloon.
http://www.imdb.com/title/tt6141246/

The Aeronauts (2019) - IMDb

Directed by Tom Harper. With Felicity Jones, Eddie Redmayne, Himesh Patel, Lewin Lloyd. Pilot Amelia Rennes (Felicity Jones) and scientist James Glaisher (Eddie Redmayne) find themselves in an epic fight for survival while attempting to make discoveries in a gas balloon.