Per Aspera Ad Astra • 1989 • episode "4/10" • The Sagan Series

Category: Astronomy
Download:

"It is beyond our powers to predict the future"

The Sagan Series • 1989 - 1990 • 10 episodes •

The Frontier Is Everywhere
3:11
The Frontier Is Everywhere

What are our frontiers?

1989 • Astronomy

Life Looks for Life
3:52
Life Looks for Life

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

1989 • Astronomy

A Reassuring Fable
3:52
A Reassuring Fable

Carl Sagan talks about religion and the universe

1989 • Astronomy

Per Aspera Ad Astra
2:15
Per Aspera Ad Astra

"It is beyond our powers to predict the future"

1989 • Astronomy

Decide To Listen
4:42
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
5:43
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
4:17
The Long Astronomical Perspective

Carl Sagan talks about our future and the exploration of space

1989 • Astronomy

Gift of Apollo
4:30
Gift of Apollo

Humanity's first steps on the Moon.

1989 • Astronomy

The Humans
3:22
The Humans

Carl Sagan talks about our place in the universe

1989 • Astronomy

Pale Blue Dot
5:34
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

Some of the Things That Molecules Do
45:15
Some of the Things That Molecules Do

Artificial selection is one example, eyes another, of the well-documented and inescapable process of evolution--change in a population of species over time--by natural selection. These are some of the things that molecules do.

S1E2 • Cosmos: A Spacetime Odyssey • 2014 • Astronomy

NASA and SpaceX: Journey to the Future
83:37
NASA and SpaceX: Journey to the Future

Elon Musk and experts from SpaceX and NASA are on a mission to revolutionize space exploration, and special inside access reveals how their cutting-edge spacecraft technology will carry humans to the Moon, Mars and beyond.

2020 • Astronomy

Journey From The Center of the Sun
42:03
Journey From The Center of the Sun

How does light escape from the sun? We take a journey from the centre of the sun, following the path of light. We witness its fiery birth from in the core, its 430,000 mile battle against gravity and magnetism, and its escape from the solar surface.

S3E1 • How the Universe Works • 2014 • Astronomy

Comets
11:54
Comets

Today on Crash Course Astronomy, Phil explains comets. Comets are chunks of ice and rock that orbit the Sun. When they get near the Sun the ice turns into gas, forming the long tail, and also releases dust that forms a different tail. We’ve visited comets up close and found them to be lumpy, with vents in the surface that release the gas as ice sublimates. Eons ago, comets (and asteroids) may have brought a lot of water to Earth -- as well as the ingredients for life.

21 • Crash Course Astronomy • 2015 • Astronomy

Breakthrough: Opportunity a Life on Mars
18:46
Breakthrough: Opportunity a Life on Mars

This year we said goodbye to one of our most intrepid planetary explorers, the Opportunity rover. Take a look back at its storied 15-year mission on Mars, and how it revolutionized our understanding of not just the red planet, but our solar system at large.

Breakthrough • 2019 • Astronomy

Stars
10:40
Stars

Today Phil’s explaining the stars and how they can be categorized using their spectra. Together with their distance, this provides a wealth of information about them including their luminosity, size, and temperature. The HR diagram plots stars’ luminosity versus temperature, and most stars fall along the main sequence, where they live most of their lives.

26 • Crash Course Astronomy • 2015 • Astronomy