Astronomy
Published on Dec 08, 2015
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PRESENTATION OUTLINE
Astronomy
- The branch of science that deals with celestial objects, space, and the physical universe as a whole.
Ellipse
- A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant, or resulting when a cone is cut by an oblique plane that does not intersect the base.
Astronomical Unit
- A unit of length, roughly the distance from the Earth to the Sun.
Gravity
- The force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account.
Rotation
- The action of rotating around an axis or center
Revolution
- An instance of revolving
Barycenter
- The point in space around which two objects orbit.
Precession
- A change in the orientation of the rotational axis of a rotating body.
Nutation
- A rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behavior of a mechanism.
Electromagnetic Spectrum
- The range of wavelengths or frequencies over which electromagnetic radiation extends.
Doppler Effect
- The change in frequency of a wave (or other periodic event) for an observer moving relative to its source.
Sunspots
- Temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions.
Solar Flare
- A brief eruption of intense high-energy radiation from the sun's surface, associated with sunspots and causing electromagnetic disturbances on the earth, as with radio frequency communications and power line transmissions.
Nuclear Fusion
- A nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
Big Bang Theory
- The Big Bang theory is the prevailing cosmological model for the Universe from the earliest known periods through its subsequent large-scale evolution.
