If aliens have visible mass-based bodies then Autopsy.

Because the word means "seeing with ones own eyes". So applicable for any being's body.

If they are energy-based entities then that opens up a whole new can of worms.

Usually, I hear people in their late teens or very early 20s have this sort of a reaction to thoughts of space and Earth and the night sky. If you're that age, I can guess that your reaction will diminish with time as you get older. Not that you will stop appreciating the thoughts but the reactions will be milder.

Having said that, he night sky is spellbinding no matter what age one is.

Enjoy the extreme reactions. You're lucky you have only to look up at the sky to really be moved emotionally! It's like a free drug :)