We see a man getting sucked into the vacuum of space during a flashback-esque scene.
In the first episode, we are introduced to earth near the end of the 22th century, which has bern nearly rendered uninhabitable due to asteroid bombs sent from the antagonists. We get to see some of the cities being completly wiped out by asteroids.
In episode 14, some aliens with special powers haunts the Yamato and messes with the mind of the crew. We get to see intense moments from the past of two main characters. This episode has a pretty unsetteling tone, and may frighten some of the younger viewers.
There are several scenes involving people getting shot by guns from both humans and fighter planes, most of which involves some minor bloodshed
The Garmillans destroys the surface of a planet with giant missiles, beam weapons and warplanes.
Overall, this show has a positive atmosphere, with only some scenes being presented with a dark tone. The crew aboard the Yamato often struggle with the pain of losing close friends and family to the enemy.