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Examines Mercury, the closest planet to the Sun. Uses photography from the Mariner fly-bys and animation to show the planet's surface features. Describes its characteristics, length of day vs. length of year, its two sunrises, and its orbit. Time-lapse images record Mercury passing across the Sun, an event that occurs only 13 times a century!
(Source: DCMP)
Figure 2.2 (OpenStax, Biology 2e) caption: Elements, such as helium, depicted here, are made up of atoms. Atoms are made up of protons and neutrons located within the nucleus, with electrons in orbitals surrounding the nucleus.
(Source: OpenStax)
The path the Earth takes around the sun is in just the right place. The trajectory of the Earth's orbit ensures life is able to exist, and this orbital journey influences almost everything on Earth. Part of the "Orbit: Earth's Extraordinary Journey" series.
Recent discoveries of water at the moon’s poles and on Mars have encouraged scientists to develop projects that will enable humans to settle in these harsh, distant environments in the near future. This episode explores the challenges of setting up an orbital space colony or a settlement on an asteroid. Part of the "Space Colonies" series.
With the retirement of NASAs space shuttle fleet in 2011, the role of getting people, satellites and other instruments into space falls to private companies. As of June 2011, there have been only 523 people to reach the 100 kilometer mark (considered human spaceflight), and only 24 have traveled beyond low Earth orbit. It is projected that within ten years, the number of people who will have flown into space will increase by about 600 percent due to the increasing market of suborbital spaceflight and the possibility of private citizens utilizing space flight. Students will explore suborbital and orbital spaceflight and the requirements necessary for vehicles to achieve these journeys. They also go behind the scenes of many of the private companies involved in taking on the tasks to travel to low Earth orbit and beyond and uncover some of the technology used to accomplish these goals.
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