i watched the rather-bad 1979 film
Meteor -
https://www.imdb.com/title/tt0079550/reference/
5.1/10 on IMDb.
Starring, so to speak, Sean Connery, and co-starring Natalie Wood, Karl Malden, Martin Landau, Henry Fonda, and a bunch more.
Connery is a retired NASA big-brain guy. He is recalled because of the titular meteor, which is headed for earth, and will destroy it in 7 days. The only option to save the world is to use Hercules, a orbital platform with nuclear missilies, which Connery built for this very purpose, but which Landau has commandeered to be used as first strike against the evil USSR.
When Connery does the math, he sees that Hercules is not enough to blow up the meteor, in order to succeed he will also need Peter The Great, the equivalent orbital missile platform that the evil USSR also have built, pointing at the evil, imperialist US. *yawns in Cold War*
Connery talks the russians into admitting their platform exists and convinces them to also say theirs was built to defeat rogue comets. The missiles are launched and there is a brief interlude where the film becomes a disaster film - a smaller piece of the comet hits NYC early, potentially causing one of the missile launches to fail - but then the missiles are launched, the meteor exploads, and everyone drinks whisky or vodka or whatever and the world is a better place.
.. to be honest, it's not bad, but it's what we italians call
polpettone, i.e. meatloaf - something that's kinda tough and chewy and difficult to get down. It's damn slow, overacted (Martin Landau must have been on coke because he's through the damn roof), the whole Cold War thing has been done to exhaustion .. it's boring. Tedious.
If you want to watch something very similar - in photography, sets, acting - but not boring, go for 1986's Lifeforce, which has big boobies AND a story worth watching (we don't speak of the ending).
It also fails because the action scenes - various disasters around the world - do not involve the characters of the story, nor the plot itself, aside from the ridiculous strike on the command center, which when it happens, feels like yet another attempt at stretching what is essentially a paper-thin story.
Would not recommend.
5.5/10 but there's better films in the same vote range that are more interesting. Quite literally a film that has absolutely nothing special anyone could miss.