Alien attack

The plectrasonic siren had gone off! Incoming! someone shouted and I instinctively pressed the drekto buttons on my suit!
The drekto mode got activated and I a sparkling violet light surrounded me. A million other such balls of violet came on all around me!
Who could be attacking us and why? We ourselves were a deprieved race! What is there to steal from us. These aliens have been watching us for several years now! It has been a thousand years I'm told, since we moved underground! An asteroid passed too closed and sucked all the life out of our planet!

We had moved underground to escape its wrath! It had taken years of preparation! Water was scarce. Every day, our underground seas would crystallize in the dark and it would be emptied by the morning to feed the entire population and the cycle continued, life was hand to mouth.
For an advanced race, we had been reduced to nothing by one random act!

My father told me of the glorious days when they lived on surface. They could visit other planets at will! He spoke highly of the one that was closes to us. They were treated with utmost reverence by the living beings on the planets. They treated us as gods for the small favours we accorded them. Our lives were heavily entwined he said ! In fact you were born there he said!
I could not remember any of it! Anwyay none of that mattered, all that remained were memories!

The siren was wailing now! I ducked bracing for the impact! I held on to all the ledges from the nearby wall in the cave with all my four hands !

Then I heard it, it was a soft thud in the sonic region! will there be an explosion? we all waited for the worst to happen!
Only silence followed!
Then we heard it, the voice! The invader was speaking in our frequency! The microwaves!
"Moon Impact probe Landed Successfully." this kept repeating consistently!
Then another voice echoed. This was different. It came from afar.
"Activate Water detection program".. again, this message was repeated until the invader acknowledged
"Activated"

I could not believe it, an invader looking for water in my planet, moon? Are these guys idiots? Could they not see that there is nothing on the top? The darned earthlings have taken to experimenting with us of late. WIsh we had the powers like we used to! We would have taught them a lesson!
The siren had wound down!
Ganesha.. shouted a voice! it was my brother Subramanian..
Coming! I shouted! Gotta run!, Its time for dinner! another day folks.. ciao.