Hydrazine has been used for decades in spacecraft as thruster propellant and as fuel for auxiliary power units. It is corrosive and extremely toxic.
The book "2010: Odyssey Two" by Arthur C. Clarke includes a Chinese spacecraft landing on Europa with similar results as this movie. The movie adaptation of the book, 2010: O Ano em que Faremos Contato (1984), excludes this.
Europa rotates once on its axis and completes one orbit of Jupiter every 3.5 Earth days, so the same side of Europa always faces Jupiter.
Filming took place in Brooklyn, New York.
Europa was discovered on January 8th 1610 by Galileo Galilei (February 15th 1564 - January 8th 1642) and Simon Mayr [Marius] (January 10th 1573 - January 5th 1625).