End of an Era: The Final Shuttle Launch • 1989 • episode "6/10" • The Sagan Series

26:46

In this talk-show with the popular astrophysicist Neil deGrasse Tyson, Bill explores a variety of topics, including the nature of an expanding, accelerating universe (and how it might end), the difference between “dark energy” and “dark matter,” the concept of God in cosmology and why science matters.

Astronomy

42:32

When a strange alien object is discovered speeding through our solar system, experts race to uncover if it's real evidence of extraterrestrial contact or a deadly asteroid on a collision course with planet earth.

Space's Deepest Secrets • 2018 • Astronomy

7:00

What would happen if we bring a sample (the size of a house) of the Sun to Earth?

In a Nutshell • 2017 • Astronomy

15:34

Active galaxies pour out lots of energy, due to their central supermassive black holes gobbling down matter. Galaxies tend not to be loners, but instead exist in smaller groups and larger clusters. Our Milky Way is part of the Local Group, and will one day collide with the Andromeda galaxy. Clusters of galaxies also clump together to form superclusters, the largest structures in the Universe. In total, there are hundreds of billions of galaxies in the Universe.

39 • Crash Course Astronomy • 2015 • Astronomy

42:05

The Solar System is home to a vast array of asteroids and comets with experts taking a journey deep into space to examine these mysterious wanderers in the search to reveal the origins of the universe and the human race itself.

S3E3 • Mysteries of our Universe: Our Solar System • 2021 • Astronomy

55:46

Hard as it is to swallow, cutting-edge theories are suggesting that our universe may not be the only universe. Instead, it may be just one of an infinite number of universes that make up the "multiverse." In this show, Brian Greene takes us on a tour of this brave new theory at the frontier of physics, showing what some of these alternate realities might be like.

4/4 • The Fabric of the Cosmos • 2010 • Astronomy