So I had a planet get conquered 3h ago and the conquerer used a planet flux on it (I'm assuming).
The planet is gone from my list.

As in I came back and had this on my new page:

3 hours, 58 mins ago
One of your scanned planets is no longer visible. Its owner has used a device to remove it from your database
3 hours, 58 mins ago From: <PLAYER>
Fanni has been conquered by <PLAYER>
3 hours, 58 mins ago
Fanni is under attack!

And if I click on the planet name link I get a "This planet is not (or no longer) within your scanning range."

Now correct me if I'm wrong, but I thought that the alert from having the planet conquered lasted 12h, regardless of if they used the planet flux or not.

it only lasts for 12 hours if it was shared like say
5 hours ago thisguy shared acraplanet
it only stays if its a legion alert.

Or if you can alert the planet before it gets fluxed, then you can still see it for 12 hours after, but just the alert to you that the planet was conquered doesn't count.

Good to know.

Thanks for the quick response.