Carl Sagan talks about religion and the universe
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Our species has discovered a way to communicate through the dark, to transcend immense distances
1989 • Astronomy
"You might have thought, as I did then, that our species would be on Mars before the century was over"
1989 • Astronomy
Carl Sagan talks about our future and the exploration of space
1989 • Astronomy
"That's home. That's us. On it, everyone you ever heard of, every human being who ever lived.."
1990 • Astronomy
Sound can’t actually travel through a vacuum like space, but scientists have learned that there’s still plenty to hear.
For decades some have suspected that there might be others out there, intelligent beings capable of communicating with us, even visiting our world. It might sound like science fiction, but today scientists from across the globe are scouring the universe for signals from extraterrestrials. Scientists have been searching the cosmos for strange signals like the Lorimer Burst for more than 50 years. The film ends with scientists' latest search for extraterrestial intelligence. Horizon obtained exclusive access to film researchers at the Green Bank Telescope searching for radio signals from Tabby's Star, a star so mysterious that some scientists believe it might be surrounded by a Dyson Sphere, a vast energy collector built by advanced aliens.
Uranus and Neptune are mysterious, icy worlds at the edge of the solar system; new discoveries reveal that these strange planets may have helped start life on Earth.
S6E5 • How the Universe Works • 2018 • Astronomy
Suppose you placed a camera at a fixed position, took a picture of the sky at the same time every day for an entire year, and overlaid all of the photos on top of each other. What would the sun look like in that combined image? A stationary dot? A circular path? Neither. Oddly enough, it makes a ‘figure 8’ pattern, known as the Sun’s analemma.
The attempt to send and land astronauts on Mars risks billions of dollars and the lives of those brave enough to attempt it. Is the possible benefit really worth the risk? And is it really achievable? Guiding us through this ethical and scientific minefield is Dr Kevin Fong. Kevin's diverse background in astrophysics, aeronautics and medicine makes him uniquely placed to understand the technical and human challenges of this perilous journey. With the help of the BBC's rich archive and a cast of supporting experts, Kevin leads us through the journey to Mars stage by stage. For Kevin, not only is this the toughest journey we will ever attempt, it is one that he feels we ultimately must make if we are to survive as a species.
2017 • Astronomy
Our rock is special - it's alive. Somehow our planet cooked up stardust and made life. But how did that begin and is it likely elsewhere? Astronaut host – Mae Jemison.
4/10 • One Strange Rock • 2018 • Astronomy