Thank god it was just a gome invader, if it was a Home invader i'd be concerned.

Okay, maybe not kill, but we could be a few months without internet as the satellites are replaced so it might as well.

This was considered a very small scale impact, and NASA and other agencies estimate that there is a 12% chance of us being hit by one in the next 10 years (as of 2012). After one narrowly missed us.
https://science.nasa.gov/science-news/science-at-nasa/2014/23jul_superstorm/
If one were to hit today it would fry many electronics, even some that are not connected to a grid in any way, and cause widespread damage worldwide.
Fun things like "destroy satellites" and "set power stations and lines on fire."
Estimated rebuild time is 10 years +.
On the bright side (heh, pun) it looks really cool under thermal and solar intensity models: https://upload.wikimedia.org/wikipedia/commons/transcoded/0/0a/Comparing_CMEs.ogv/Comparing_CMEs.ogv.480p.webm

I love these things, because they're one of the most likely ways to kill us and there's nothing we can do about it. It wouldn't end the world, but it would definitely feel like it.

At this point the electric industry was only just budding, with only few power or transmission lines in major areas but the impact of the CME was enough to cause the (very weak) lines to spark violently, electrocute operators and some even reported "telegraph operators could continue to send and receive messages despite having disconnected their power supplies."
https://www.google.com/search?tbs=bks:1&q=isbn:0309076420

AoT wiki says 15 (850) & 19 (854).
Levi's age is not specifically known, it just says Early 30s (850) & 30s (854).
I haven't seen enough to know which time jump this refers to.

Well that just got (Levi's age - Eren's age) times creepier.

Still more expressions than Kristen Stewart.

Whoa dude, I'm just trying to make a House MD reference. No need to get too into it.