Curated Video
USA: NASA CONFIRMS THAT MARS PATHFINDER MISSION IS GOING WELL
English/Nat
Scientists involved with the Pathfinder mission to Mars on Sunday gushed that everything was going perfectly.
The small spacecraft landed on the Martian surface on the Fourth of July and has since released its small rolling...
Curated Video
USA: NASA CONFIRMS THAT MARS PATHFINDER MISSION IS GOING WELL UPDATE
English/Nat
Scientists involved with the Pathfinder mission to Mars on Sunday gushed that everything was going perfectly.
The small spacecraft landed on the Martian surface on the Fourth of July and has since released its small rolling...
Crash Course
The New Astronomy: Crash Course History of Science #13
Sword duels, religious unrest, war—who says science is boring? Aspiring astronomers discover fascinating facts about the famous scientists that dared challenge the accepted model of the solar system in the 13th video of a 16-part History...
Crash Course
Distances
How can you determine the distance between two objects when one is incredibly far away? Discover how early astronomers and mathematicians calculated quantities such as the distance between Earth and the Sun in an insightful video. The...
Khan Academy
Parsec Definition, Stars, Black Holes and Galaxies, Cosmology and Astronomy
What is a parsec? Sal's video explains that a parsec is 3.26 light years and that the word itself can be broken down into "par" (meaning parallax) and "sec" (meaning one arc second). He uses illustrations, diagrams, and trigonometric...
Khan Academy
Parallax in Observing Stars, Cosmology and Astronomy
Parallax is the apparent change of an object determined by the line of sight. Sal defines the concept of parallax and applies it to how we determine the relative distance between us and nearby stars. He draws a diagram to illustrate what...
Khan Academy
Stellar Distance Using Parallax, Cosmology and Astronomy
As a follow-up to the Khan Academy video on parallax, this video focuses on parallax as it relates to astronomical distance. Sal uses cardinal directions and the seasons to help students orient themselves in the proverbial night sky....
Khan Academy
Stellar Parallax Clarification, Cosmology and Astronomy
A short clarification begins where the last video on stellar distance left off. It intends to clarify the trigonometry involved in using Parallax to determine stellar distance. The instructor uses the equations from the previous video to...
Massachusetts Institute of Technology
Mit: Blossoms: The Parallax Activity: Measuring the Distances to Nearby Stars
Determining the position of a star or other object in three-dimensional space is an important concept in astronomy. Finding stellar longitude (called right ascension) and latitude (declination) is easy enough, but it is much harder to...
Crash Course
Crash Course Astronomy #25: Distances
How do astronomers make sense out of the vastness of space? How do they study things so far away? Today Phil talks about distances, going back to early astronomy. Ancient Greeks were able to find the size of the Earth, and from that the...
Khan Academy
Khan Academy: Stellar Parallax: Stellar Distance Using Parallax
Gain an understanding of Stellar Distance Using Parallax in this in depth video. [11:40]
Khan Academy
Khan Academy: Stellar Parallax: Stellar Parallax
Video lecture provides an introduction to stellar parallax. [9:26]