With astrophysicist Neil deGrasse Tyson as your guide, go beyond
the night sky and into deep space to find out how discoveries over the
past 100 years have led us to two great cosmic mysteries: dark matter
and dark energy.
In the past half century, humans have punched through the stratosphere,
walked on the moon, and lived continuously in orbit. In the coming
decades, our unquenchable curiosity will take our species beyond the
cradle of Earth to touch the face of another world. Strap in for the
next giant leap. Next stop ... Mars!