mercury perihelion shift
11Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
12Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
13physical science — physical scientist. 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy. 2. these sciences collectively. [1835 45] * * * Introduction the systematic study of the inorganic world …
14Lorentz ether theory — What is now called Lorentz Ether theory ( LET ) has its roots in Hendrik Lorentz s Theory of electrons , which was the final point in the development of the classical aether theories at the end of the 19th and at the beginning of the 20th century …
15Nibiru collision — This article is about the doomsday scenario. For other uses, see Nibiru. V838 Mon, a star with an expanding light echo, purported as photographic evidence of Nibiru The Nibiru collision is a supposed disastrous encounter between the Earth and a… …
16Venus — This article is about the planet. For other uses, see Venus (disambiguation). Venus   …
17Solar sail — Solar sails (also called light sails or photon sails, especially when they use light sources other than the Sun) are a proposed form of spacecraft propulsion using large membrane mirrors. Radiation pressure is about 10 5 Pa at Earth s distance… …
18Orbital resonance — For the science fiction novel by John Barnes, see Orbital Resonance (novel). In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their… …
19Neptune — This article is about the planet. For other uses, see Neptune (disambiguation). Neptune   …
20Extraterrestrial atmospheres — The study of extraterrestrial atmospheres is an active field of research, [cite web| title=Department of Atmospheric Science, University of Washington | url=http://www.atmos.washington.edu/academic/planets.html | accessdate=2007 05 24] both as an …
