Deep Science | Documentary Tapes

Earth's Motion Around the Sun | It`s not Easy as We Thought               Earth's Motion Around the Sun | It`s not Easy as We Thought | Explained in Detail Basics of Space Flight TABLE OF CONTENTS Section 1: Environment,   Chapter 2: Reference Systems CHAPTER 2  QUIZ Reference Systems PAGE 1 OF 3 Chapter Objectives Upon completion of this chapter you will be able to describe the system of terrestrial coordinates, the rotation of Earth, precession, nutation, and the revolution of Earth about the sun. You will be able to describe how the locations of celestial objects are stated in the coordinate systems of the celestial sphere. You will be able to describe the use of epochs and various conventions of timekeeping. ON THIS PAGE Terrestrial Coordinates Terrestrial Coordinates Grid Rotation and Revolution Earth's Rotation Precession of Earth's Axis Over 26,000 Years Nutation Revolution of Earth Shorter-term Polar Motion Making Sense Spatial coordinates and timing conventions

In 1986, the Space Shuttle Challenger exploded after liftoff, killing all seven astronauts on board. The Challenger broke apart at 11:39 a.m., falling into the Atlantic Ocean.   1986 - Challenger Space Shuttle Explosion || Deep Science Documentary Tapes Investigators would later discover the disaster was caused by the failure of an “O ring” seal in one of the two solid-fuel rockets. As a result of the horrific accident, NASA did not send astronauts into space for more than two years as it redesigned a number of space shuttle features for improved safety. In this clip, filmed on the PIX11 News at 10 p.m. on the night of the disaster, viewers can see the parents of Christa McAuliffe in the audience watching the launch. McAuliffe was an American teacher chosen to be the first private citizen in space. Challenger: The shuttle disaster that changed NASA A view of the shuttle Challenger's maiden STS-6 launch on April 4, 1983. In this view, Challenger is just clearing the launch pad in a