...space the satellites out evenly just inside the orbit of Venus. Some astronomers have looked into building and launching a single space telescope, tasked with keeping its eye out for asteroids. Building it could take eight to 10 years and cost about half a billion dollars. But those five mini telescopes could do the same thing, Shao’s group proposed online March 29 on arXiv.org. Once launched, they could find all the high-risk asteroids in perhaps three years — and for just one-tenth a big telescope's cost. They would be really tiny Scott Higginbotham at NASA’s Kennedy Space Center, Florida holds a mini CubeSat. Used in recent years for many low-cost projects, they might one day scout for killer asteroids. NASA (CC BY-NC 2.0) Shao proposes mounting telescopes on miniature satellites. Called CubeSats, each is typically just 10 centimeters (4 inches) on a side. CubeSat...
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...SPEECH - FORMAL OUTLINE TITLE: The Benefits of 3D Printing INTRODUCTION Attention material: Printable firearms, household objects, medical implants, jewelry, racing-car parts, customized mobile phones, and even printable buildings are only a few of the items that technology has enabled us to create using 3D printers. Printing with materials such as nylon, resins, waxes, photopolymers, and cement, products are being produced to fit our needs in a labor-saving manner as our world becomes more and more advanced. Thesis statement or central idea: Awareness of 3D printing; and especially how important it is. The technological advances of 3D printing and its convenient and useful applications should be more widely recognized. Preview: The appliance of 3D printing to our world and our daily needs is something that many people do not fully appreciate. Knowing what 3D printing could do for you can benefit you in many ways. (Transition “First we will take a look at what 3D printing is.”) BODY I. Also known as additive manufacturing, 3D printing is the process of creating three dimensional solid objects from a digital model. (Wikipedia, 2014) A. In 3D printing an object is created by laying down successive layers of material through additive processes. (“3D Printing”, 2011) B. 3D printing process is used to create a variety of...
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