Verified answer

1. It's "species" not "spices."

2. No alien species have ever been observed by Earth's scientists.

3. Nothing can "hear with their eyes." Sound and light are two different forms of energy, and are not translatable or transferable.

Nasa is currently aware of 7 documented Alien species. 3 known to be earth inhabiting, and 4 that have been discovered while on voyages to the great beyond.

Nasa is currently working on capturing all of them into small RED AND WHITE ALIEN balls and using them to battle each other.

72 non-terrestrial species have been documented.

species*