Search engines are all about what people are looking for on the web. It's quite possible that more people are currently interested in Meteor the framework than meteors the objects, in which case I wouldn't call this result "pollution."

If you really want the Wikipedia page for meteors, nothing's stopping you from going straight there.

I very much doubt that, with the Perseid shower due this weekend.

My top 2 hits were meteor.com and meteor.ie (a mobile communications provider in Ireland) and then space debris. It would seem domain names have a lot of SEO weight, an important takeaway for startups.