NASA is a military agency. That's why.
I agree wholly with the above comments about hiding God. They also seek to hide any impending dis-aster, meaning any incoming planets or stars or external catastrophe such as Nova's or cosmic rays.

Most of the modern scientific paradigm is designed to be secular and discount god, but there are paradigms that more or less prove intelligent design vs evolution.

My favorite being the Thunder Bolts Project team.

The paradigm of the electric universe is centered around a creator and is a return to the sciences of 200 years ago, which I would argue was far more accurate than the circus of scientism and zealotry we have going on today.

Thunderbolts.info