Astrometry

Astrometry

A branch of astronomy that deals with the measurement of the position and motion of celestial bodies.

Industry: Astronomy

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Astrometry

Doppler Effect

Astronomy; Astrometry

The apparent change in wavelength of sound or light emitted by an object in relation to an observer's position. An object approaching the observer will have a shorter wavelength (blue) while an ...

A celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite. It has to have sufficient ...

equinox

Astronomy; Astrometry

The two points at which the Sun crosses the celestial equator in its yearly path in the sky. The equinoxes occur on or near March 21 and September 22. The equinoxes signal the start of the Spring ...

eyepiece

Astronomy; Astrometry

The lens at the viewing end of a telescope. The eyepiece is responsible for enlarging the image captured by the instrument. Eyepieces are available in different powers, yielding differing amounts of ...

galaxy

Astronomy; Astrometry

A large grouping of stars. Galaxies are found in a variety of sizes and shapes. Our own Milky Way galaxy is spiral in shape and contains several billion stars. Some galaxies are so distant the their ...

Steady State Theory

Astronomy; Astrometry

The theory that suggests the universe is expanding but exists in a constant, unchanging state in the large scale. The theory states that new matter is being continually being created to fill the gaps ...

2015 Venus retrograde

Astrology; General astrology

The 2015 Venus retrograde runs from Jul 25 until Sep 6. This is usually lasts about forty days and forty nights. Forty is mentioned in the bible often, but most famously when Jesus was tempted by ...