- PERIGEE. Lewis, James R. // Astrology Book;2003, p518
A definition of the term "perigee" is presented. Perigee came from the Greek word peri, meaning near, and gaia, meaning earth. It explains that when a satellite is closest to the earth, it is at its perigee.
- GEOCENTRIC ASTROLOGY. Lewis, James R. // Astrology Book;2003, p277
A definition of the term "geocentric astrology" is presented. It refers to any astrological system that uses Earth as the point of reference from which to record the positions of celestial bodies. It notes that all traditional systems were geocentric, but some astrologers have experimented with...
- FIRST STATION. Lewis, James R. // Astrology Book;2003, p245
A definition of the term "first station," is presented. When, from the perspective of Earth it appears that a planet pauses and then reverses direction, first station refers to the point at which the planet pauses.
- Earth. // American Heritage Student Science Dictionary;2009, p106
A definition of the term "earth" is presented. It refers to the third planet from the sun and the fifth largest. Earth is the only planet known to support life. It is also the only planet on which water in liquid form exists, covering more than 70 percent of its surface.
- Ju·pi·ter. // American Heritage Student Science Dictionary;2009, p190
A definition of the term "Jupiter" is presented. It refers to the fifth planet from the sun and the largest, with a diameter about 11 times that of Earth. It turns on its axis faster than any other planet in the solar system, taking less than ten hours to complete one rotation.
- What was the Volatile Composition of the Planetesimals that Formed the Earth? Joseph Nuth // Earth, Moon & Planets;Jun2008, Vol. 102 Issue 1-4, p435
Abstract Is there an asteroid type or meteorite class that best exemplifies the materials that went into the Earth? Carbonaceous chondrites were once the objects of choice, and in the minds of many this choice is still valid. However, the origin of primitive chondritic meteorites is unclear....
- Predictions for the Aurigid Outburst of 2007 September 1. Peter Jenniskens; Jérémie Vaubaillon // Earth, Moon & Planets;Jun2008, Vol. 102 Issue 1-4, p157
Abstract The September 2007 encounter of Earth with the 1-revolution dust trail of comet C/1911 N1 (Kiess) is the most highly anticipated dust trail crossing of a known long period comet in the next 50 years. The encounter was modeled to predict the expected peak time, duration, and peak...
- Systematic effect of the Galactic aberration on the ICRS realization and the Earth orientation parameters. Liu, J.-C.; Capitaine, N.; Lambert, S. B.; Malkin, Z.; Zhu, Z. // Astronomy & Astrophysics / Astronomie et Astrophysique;Nov2012, Vol. 548, p1
Context. The curvature of the motion of the solar system barycenter around the Galactic center induces an aberration effect varying linearly with time. It can be called the "Galactic aberration" and is also known as the "secular aberration (drift)" or "aberration in proper motions". This results...
- Jupiter's show. Rao, Joe // Natural History;Jul96, Vol. 105 Issue 7, p57
Presents information on astronomy. Events in the solar system for the month of July 1996; Jupiter; Mercury; Venus; Mars; Saturn; Moon; Earth.