By: Peter Gichuru
Flight is defined as the motion of an object in or through a medium, usually through the earth’s atmosphere or space. Flight is as a result of the four basic forces; lift, weight, thrust and drag. When one flies straight and level at a...
Principles of flight: Drag, lift, thrust and weight
By: James Villano
Flight is the result of an elegant balance of thrust, parasitic drag, weight and lift. Any changes in this balance will result in climb or descent. A discussion of these key ingredients is appropriate in understanding this ability to fly envied by man since before...
Principles of flight: Drag, lift, thrust and weight
By: Mac Pike
The airliner or military jet passing majestically overhead seems to move almost magically through the sky, so effortless is the apparent motion. Yet these aircraft weigh tons, sometimes many tons. The one of a kind An-225 Mriya, designed to lift extremely heavy cargoes for the...
Three new planets discovered in "habitable zone"
By: Leigh Goessl
As our society continues to be fascinated by what is in outer space, scientists continue to look past our immediate horizons and into what existences might be beyond. In April 2013, scientists announced the discovery of three previously unknown planets located in what has been...
Axis of an aircraft in flight
By: John Traveler
Once an aircraft defies gravity to leave the ground it is subjected to four basic aerodynamic forces known as weight, lift, thrust, and drag. How the aircraft relates to these forces is called flight dynamics and involves three axes of control, pitch, roll, and yaw...
By: David Thackston
Mercury is the smallest planet in earth’s solar system as well as being the closest to the sun, and as such it poses unique difficulties when it comes to viewing the planet. Due to its position inside of earth’s orbit, as well as...
By: Prin Dumas
Since 1957, humans have experienced great moments in space exploration. Full of repeated trials and errors, space exploration involves dedicated scientists and cosmonauts to research and take risks for the sake of advancements in technology. From the 1957 achievement of Sputnik to today's Mars rover...
Great moments in space exploration
By: Christyl Rivers
It began with Sputnik. When the Soviet Union launched the first satellite, Sputnik One, on October 4, 1957, the space race was on. Since this was the height of the Cold War, the United States was concerned. They quickly formed NASA, the National Aeronautics and...
By: Cynthia Astle
Stars have fascinated humans since the earliest people looked up at the sky and wondered about its twinkling points of light. Today, thanks to sophisticated observations, scientists on Earth know more about the phases in the creation of a star than ever before – and...
When and why space and time became space-time
By: Michael Prather - 660563
Anyone who’s ever dabbled in physics is familiar with Albert Einstein’s Theory of General Relativity . This famous theory describes gravity as the effect of massive objects on the geometry of space, saying that the space around a massive body is distorted in the...

 

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