A quick search reveals that any planets nearby that support life are already occupied by other empires. Dropping Jethro-based life on these planets would be highly suspicious. You make a mental note of where they are, for future reference.
You send your encyclopedia ship to the L'sk'ck'it, in an effort to learn more about them. However, when the ship teleports into one of their systems, they quickly destroy it, without warning.
Unfortunately, that's not the worst of your problems.
At first, the NOT-BLOB ship appeared in the Oort cloud. As you sent the Primpsks out to greet the NOT-BLOBS and give them the latest shipment (not they have been giving you anything good lately) another ship appeared, and another and yet one more. Soon, the Oort cloud was full of them. Any doubt of their intentions were dispelled when they blasted the incoming Primpsk ship.
You sent the 20 War crabs out in a desperate attempt to defend Caanan, despite the fact that the War crabs were out-numbered. At first, the War crab's laser weaponry gave you hope that they could succeed, until the NOT-BLOB fleet disappeared. Cursing, you realize that the NOT-BLOBS have cloaking technology as well. With the NOT-BLOB ships only appearing quickly enough to target the War crabs, the battle was incredibly one-sided.
The NOT-BLOB fleet takes its time approaching Jethro, blasting all the visible Primpsk settlements, and punching holes in your Dyson spheres. You franticly try to stop the fleet, but nothing works. There are no infected NOT-BLOBS on board of any of the ships. The spores you sent out to infect the NOT-BLOBS were blasted with intense radiation from the NOT-BLOBS, much more than any living thing could handle.
When the NOT-BLOBS reach Jethro, you send all the half-built ships you have made at them, only to see them blasted away. When the NOT-BLOB armada hovers over Jethro, an intense bombardment begins, turning the surface of the planet into molten lava, killing almost everything on the surface. Even the parts of you underneath the surface are effected, as the bombardment shakes the planet, causing earthquakes and cave-ins. It is not long before you lose all contact with your homeworld.
Several days past before you gather up the courage to approach Caanan again. A small probe, specially designed for this purpose, is sent. Surprisingly, no NOT-BLOBS are left in the system, not even scavengers. It's easy to see why. The intense radiation the NOT-BLOBS used to kill your spores caused many radioactive isotopes to be created. The system is awash with radiation. Most of the planets and moons which you settled on are gone, perhaps pushed into the sun. However, Jethro, alone, still makes its orbit. As the probe draws nearer, it spots something carved into the planet.
This is a masterwork carving of a NOT-BLOB and an unknown alien by the NOT-BLOB fleet on the planet Jethro. The NOT-BLOB is making a rude gesture. The unknown alien is shaking its fist.