The Frontier Is Everywhere • 1989 • episode "1/10" The Sagan Series

Category: Astronomy

What are our frontiers?

The Sagan Series • 0 • 10 episodes •

The Frontier Is Everywhere

What are our frontiers?

1989 • Astronomy

Life Looks for Life

It's our fate to live in the dark...

1989 • Astronomy

A Reassuring Fable

Carl Sagan talks about religion and the universe

1989 • Astronomy

Per Aspera Ad Astra

"It is beyond our powers to predict the future"

1989 • Astronomy

Decide To Listen

Our species has discovered a way to communicate through the dark, to transcend immense distances

1989 • Astronomy

End of an Era: The Final Shuttle Launch

"You might have thought, as I did then, that our species would be on Mars before the century was over"

1989 • Astronomy

The Long Astronomical Perspective

Carl Sagan talks about our future and the exploration of space

1989 • Astronomy

Gift of Apollo

Humanity's first steps on the Moon.

1989 • Astronomy

The Humans

Carl Sagan talks about our place in the universe

1989 • Astronomy

Pale Blue Dot

"That's home. That's us. On it, everyone you ever heard of, every human being who ever lived.."

1990 • Astronomy

You might also like

Most Amazing Discoveries

From the furthest reaches of space to our own cosmic backyard, we count down the discoveries that changed everything we know about our universe.

2016 • How the Universe WorksAstronomy

Triumph and Tragedy

With repeated triumphs and new challenges comes increasing risk, until loss breaks the pattern. The white-knuckle suspense thriller of Apollo 13's famous near-disaster is only a triumphant prelude to darker moments ahead. The launch of the space shuttle program promises routine trips to Earth orbit for many new astronauts. But just when that promise seems fulfilled, routine shuttle launches begin to bore the public. NASA responds by training a school-teacher to fly, in order to teach children lessons from space. Christa McAuliffe's life is tragically cut short as she and the rest of the crew perish aboard the shuttle Challenger. All missions are halted. Eventually the shuttle returns to orbit, for fifteen years of successful missions until disaster strikes again with the shocking loss of Columbia. It would be the beginning of the end for the shuttle.

2009 • The Space Age: NASA's StoryAstronomy

Black Holes

We’ve covered a lot of incredible stuff, but this week we’re talking about the weirdest objects in space: BLACK HOLES. Stellar mass black holes form when a very massive star dies, and its core collapses. The core has to be more than about 2.8 times the Sun’s mass to form a black hole. Black holes come in different sizes, but for all of them, the escape velocity is greater than the speed of light, so nothing can escape, not matter or light. They don’t wander the Universe gobbling everything down around them; their gravity is only really intense very close to them. Tides near a stellar mass black hole will spaghettify you, and time slows down when you get near a black hole — not that this helps much if you’re falling in.

2015 • Crash Course AstronomyAstronomy

Darkest Days

In 2037, psychological pressure takes its toll as the crew is trapped in the habitat. In reality, scientists study the effects of extreme isolation.

2017 • MARSAstronomy

Hunt for Dark Energy

Meet the scientists across the world on the hunt for dark energy, an unknown form of energy which is hypothesized to permeate all of space and may be accelerating the expansion of the universe.

2016 • Space's Deepest SecretsAstronomy

Using Stars to See Gravitational Waves

Now that gravitational waves are definitely a thing, it’s time to think about some of the crazy things we can figure out with them. In some cases we’re going to need a gravitational wave observatory - in fact, we've already built one.

2018 • PBS Space TimeAstronomy