According to the article, Ashley Walker sees similarities between Titan and 2 points Earth. Which paragraph from the article BEST supports this idea?
There is so much we don't know about the stors, planets, moons, comets, and
asteroids in our solar system. At NASA, where I work, I'm studying the chemical
O composition of Saturn's moon Titan. Much of Titan's atmosphere (a layer of gases
that surrounds a planet) contains the gases methane and nitrogen. This makes it
different than Earth's atmosphere, which contains mostly oxygen and nitrogen.
Cassini helped teach us more about the conditions of Titan's atmosphere. With that
information, we then copy these conditions in a lab at NASA. This means I work with
methane and nitrogen gas molecules by running experiments on these compounds.
We also run computer models, or simulations that imitate Titan's conditions and
certain outcomes following chemical reactions.
Learning about Titan is really important because it can help us learn about whether
there is life as we know it elsewhere in our own solar system. It can also help us learn
more about Earth and about the origin of our universe!
Titan is really interesting because of its hydrocarbon cycle. On Earth, the hydrologic
cycle is how water moves from the ocean and other watery surfaces into the
atmosphere and then falls back to land. Titan has a hydrologic cycle too, but it's with
O hydrocarbons, molecules formed from hydrogen and carbon. This means that Titan
has oceans, rivers, and lakes made of hydrocarbons like methane and ethane. Its
atmosphere is hazy and thick with these compounds. It's even possible that there is
liquid water there.