With the launch of 2.4 Professor Palin is giving out large amounts of credits for Thargoid stuff.

Where: Maia - Obsidian Orbital.

When: Now, duration unknown.

What do you need: A ship with SRV bay and cargo racks for at least 4 tonnes, and for the first trip or you need an advanced discovery scanner as well. If you have access to Professor Palin you should get corrosion resistant cargo tracks, if not then make sure to install an AFMU (Automated Field Maintenance Unit). A ship with good maneuverability is recommended, and decent jump range.

When you enter or dock at Obsidian Orbital you will be offered a mission to get Thargoid Resin/Biological Matter/Technology.

This mission will pop up every time you dock at the station after you have arrived to the system or changed game mode.

The mission is to bring back either 1, 2, 3 or 4 units of either Thargoid Resin, or Thargoid Biological Matter, or Thargoid Technology, to a random station/port in Maia, and the payout will be between 3.5 and 5.5 million credits per unit.

It doesn't matter which kind of material you need to bring back, but you should make sure to get at as many units as possible at as high payout as possible - aim for at least 4.5 million per unit and at least 3 units - and always to Obsidian Orbital.

If you don't get a mission like that, decline the mission, log out to main menu, enter game in another game mode (ie. if you were in open play before, log into private group or solo, if you were in private group log into open play or solo etc.), exit the station, and at about 2.5 km out request docking permission again and dock. When you dock again you will be offered a new mission. If the new mission isn't to your liking either, decline again and repeat until you get the mission you want. This is why I recommend using a ship with good maneuverability - you will be doing a lot of leaving, turning back and docking again, so better make that easy to do.

When you have accepted the mission, go to HIP 17125, planet A 3 A, coordinates -65.8193 / 48.8662. Here you will find a crashed Thargoid Scout, and scattered around it the Thargoid Resin/Technology/Biological Matter that you are looking for.

It should be possible to scan the Thargoid Scout, but for some reason it's marker is about 450 metres below ground level, so you have to boost up in your  SRV and point it down to scan the marker. If you scan the marker you will have a permanent marker when arriving, making it much easier to find again - though personally I haven't succeeded.

After picking up the Thargoid Resin/Biological Matter/Technology according to the mission, lift off and get back to Obsidian Orbital to cash in the big bucks. Rinse and repeat :)