First Steps to Mars • 2021 • episode "S1E1" • Becoming Martian

42:29

New evidence is rewriting the history of our solar system, and using the latest discoveries and cutting-edge tech, experts are investigating if our cosmic neighborhood once featured oversized alien Earths and a second Sun.

Space's Deepest Secrets • 2019 • Astronomy

43:54

After the destruction of Shuttle Challenger, the US considered grounding its fleet for good. That is until the stunning discovery that the Soviets had built their own fleet using plans stolen from NASA.

S1E2 • Secrets of the Space Shuttle • 2018 • Astronomy

99:21

On September 14th, 2015, a ripple in the fabric of space, created by the violent collision of two distant black holes over a billion years ago, washed across the Earth. As it did, two laser-based detectors, 50 years in the making – one in Louisiana and the other in Washington State – momentarily twitched, confirming a century-old prediction by Albert Einstein and marking the opening of a new era in astronomy. Join some of the very scientists responsible for this most anticipated discovery of our age and see how gravitational waves will be used to explore the universe like never before.

World Science Festival • 2016 • Astronomy

4:17

Carl Sagan talks about our future and the exploration of space

7/10 • The Sagan Series • 1989 • Astronomy

53:32

Since it explored Pluto in 2015, the New Horizons spacecraft has been zooming toward NASA's most distant target yet. Join the mission team as the probe attempts to fly by Ultima Thule, an object 4 billion miles from Earth.

NOVA PBS • 2019 • Astronomy

43:00

For years, scientists suspected that the oceans came from molecules delivered to Earth from distant stars by asteroids, but a new discovery suggests that their true origins may be more exotic.

S4E7 • How the Universe Works • 2015 • Astronomy