You watch people and study them the way an alien would.
Sentiment: POSITIVE
If an alien visited Earth, they would take some note of humans, but probably spend most of their time trying to understand the dominant form of life on our planet - microorganisms like bacteria and viruses.
I grew up watching 'Star Trek.' I love 'Star Trek.' 'Star Trek' made me want to see alien creatures, creatures from a far-distant world. But basically, I figured out that I could find those alien creatures right on Earth. And what I do is I study insects.
You can learn so much just by observing.
The best way to study Mars is with two hands, eyes and ears of a geologist, first at a moon orbiting Mars... and then on the surface.
Studying whether there's life on Mars or studying how the universe began, there's something magical about pushing back the frontiers of knowledge. That's something that is almost part of being human, and I'm certain that will continue.
I study people all the time. For some reason, we're not very good at seeing what's there or hearing what we're hearing.
We cannot understand our humanity just by studying individuals.
When you run into something interesting, drop everything else and study it.
We're looking at Earth science, observing our planet. Also space science, looking at the ozone in the atmosphere around our Earth. Also looking at life science. And on a human level, using ourselves as test subjects.
The one way to discover about aliens is to tune your radio telescope and listen to the signals.