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

4:22

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.

TED-Ed • 2015 • Astronomy

4:30

Humanity's first steps on the Moon.

8/10 • The Sagan Series • 1989 • Astronomy

11:16

Today on Crash Course Astronomy, Phil invites you to head outside and take a look at all the incredible things you can see with your naked eye.

#2 • Crash Course Astronomy • Astronomy

10:31

An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having another body pass between it and the viewer.

#5 • Crash Course Astronomy • Astronomy

42:01

Landing humans on Mars will be hard, but keeping them alive will be even harder. NASA scientists are on the verge of designing some of the most innovative rockets and training the astronauts who will pilot them.

5/6 • Mars: The Secret Science Series 1 • 2014 • Astronomy

44:36

Part 1 of this series chronicles NASA’s finest accomplishments in space exploration – the moments that inspired generations over the last 50 years. Re-discover the highlights of mankind’s progress including achievements such as the Freedom 7.

1/2 • NASA's Ten Greatest Achievements • 2016 • Astronomy