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On the left, Josh Cassada
and on the right, Commander Nicole Mann.

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And here come our second two astronauts,
mission specialist Koichi Wakata.

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And Ana Kikina.

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It's incredible to be in space!

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Mom look, I'm finally in space!

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It's like coming back
to a home away from home for me.

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And I cannot wait to work
with this wonderful crew on Expedition 68.

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It is so important,
the science that we're doing on board

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the space station, a lot of the science
is about our human bodies.

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A lot of it is technology demonstrations
for a future exploration into space.

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But also a lot of what we do
on the International Space Station

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benefits humans back on Earth
and focuses on our planet

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and how important it is
that we gather this information

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and this data to understand
how we are affecting the planet

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and how to take care of it.

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This morning, I was helping
set up an experiment for plant growth.

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We're going to grow a little dwarf
tomatoes up here, and we're trying

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all different kinds of varieties of light
in terms of color, in terms of duration,

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so that eventually we can start growing
our own fruits and vegetables up here.

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And then we're really going to need
that for deep space.

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Station is a wonderful testbed for future
exploration and I'm so excited to be part

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of this experiment that will benefit us
for exploration of the Moon and Mars.

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Great work down there today.

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We're excited to uh to unpack
and get to work.

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The experiments up here

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that I get really excited about
because I did physics before I got here.

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There's a big one on top of the space
station.

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It's called the Alpha Magnetic
Spectrometer, super cool experiment

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that is just collecting cosmic rays
from the universe and answering questions

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about dark matter and dark energy.

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We've got another one
that's called the Cold Atom Lab,

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where we're looking at something
called a Bose-Einstein condensate.

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It's the same technology

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we have on the ground, but up here
you don't have to fight gravity.

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And so we can actually see quantum
mechanics happen at the macroscopic level.

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I'm often asked, what is it
we're going to learn?

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And I know that if we already know
what we're going to find, then

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I'll tell you what,
there's no reason to be doing the science.

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The reason we're doing
the science is because we don't know

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what we're going to find.