Opposition

Opposition Related Category: Astronomy: General in astronomy, alignment of two celestial bodies on opposite sides of the sky as viewed from earth. Opposition of the moon or planets is often determined in reference to the sun.

Opposition (astronomy) Opposition is a term used in positional astronomy and astrology to indicate when one celestial body is on the opposite side of the sky when viewed from a particular place (usually the Earth).

Opposition The positioning of two celestial bodies relative to a third (usually the , , and a third celestial body) such that they are 180° apart in . Note that the bodies need not actually lie on a straight line since they may lie at different . , , ...

opposition Home ... Science and Technology Astronomy and Space Exploration Astronomy: General ... Essential reading Compare side-by-side The Oxford Companion to ... A Dictionary of Astronomy The Columbia Encyclopedia, ...

But oppositions of Saturn, which come about two weeks later every year, are hardly the same each time around. After this year's opposition, Saturn will dim year by year, and in the years 2009 and 2010 will appear at its dimmest in Saturn's 29.

Definition: opposition: A superior planet is said to be "in opposition" when it is directly on the opposite side of the Earth from the Sun. This is generally the closest it comes to the Earth and the time at which it is most easily visible. (e.g.

Opposition to the Second Boer War in Britain was modest when the war began on 11 October 1899 and was always less widespread than support for it, let alone prevailing indifference.... The Absent-Minded Beggar The Absent-Minded Beggar ...

Opposition dates are approximately 6 months after conjunction, August 18 in the case of Neptune while Uranus is at opposition on September 17.

Opposition A planet further out from the Sun than Earth is in opposition at 180 degrees from the Sun, directly on the opposite side of the Earth. A planet in opposition is at its closest to, and at its best visibility from, Earth. Precession ...

Opposition The point at which a planet appears opposite the Sun in our sky. During the Martian opposition, for example, Mars and the Sun are on opposite sides of the Earth. Optical Telescope ...

Opposition to Parker's hypothesis on the solar wind was strong. The paper he submitted to the Astrophysical Journal in 1958 was rejected by two reviewers.

OPPOSITION A planet is in opposition when the Earth is exactly between that planet and the sun. Mercury and Venus can not be in opposition. OPTICAL TUBE The optical tube is the main body or tube of a telescope. This optical tube holds the objective.

opposition: Point in the sky that is opposite to the apparent position of the Sun.

Opposition When a planet is exactly opposite the Sun, so that the Earth is between them. Orbit ...

opposition the moment when a planet farther from the sun than Earth appears opposite the sun in the sky; it is the best time to observe a planet orbit ...

Opposition When a celestial body is opposite the Sun in the sky. Orbit The path followed by one body as it moves around another.

opposition Une planète est en opposition lorsque, vue de la Terre, elle se tient au cõté qui est opposé au Soleil. La différence de longitude entre le Soleil et la planète est donc de 180°.

Opposition (a) Occurs when the Earth comes directly between that planet and the Sun; it can thus only happen in relation to the superior planets and the asteroids.

opposition - (n.) The passage of a planet through the point most directly opposite the sun on the other side of the earth. optical activity - (n.) ...

Opposition is a good time to observe an outer planet with Earth-based instruments, because it is at its nearest point to the Earth and it is in its fullest phase. Inferior planets can never be at opposition to the sun, from Earth's point of view.

opposition -- the configuration of a planet when it is opposite the Sun in the sky. If a planet is in opposition, it rises when the Sun sets and sets when the Sun rises.

Opposition. The position of a planet when it is opposite the Sun in the sky.

Opposition - The configuration of a planet or other body when it appears opposite the Sun in the sky Orbit - The elliptical or circular path followed by a body that is bound to another body by their mutual gravitational attraction ...

THE OPPOSITION MUSTER In December, 1614, a meddlesome and ambitious Dominican priest, Thomas Caccini, preached a fiery sermon in Florence denouncing Copernicanism and science in general as contrary to Christian faith.

Current opposition brightness of Eris 23 Maximum brightness of Pluto's smallest moons Hydra and Nix ...

The best opposition of the 20th century was in 1924, when Mars passed just a few thousand miles farther than it will this year.

"Death to the opposition!" - Worf (DS9: "Take Me Out to the Holosuite") "Do not hug me." ...

3 A planet is in opposition when Earth is between it and the Sun. This is an outer planet's point of closest approach to Earth.

Due to its use in opposition to the phrase itebbiru "who used to cross," Landsberger and Kinnier Wilson suggest that it refers to a stationary point in the heavens.

March 3 - Mars at Opposition. The red planet will be at its closest approach to Earth and its face will be fully illuminated by the Sun. This is the best time to view and photograph Mars. March 8 - Full Moon ...

The visible part of the waxing moon increases in size during the first half of the cycle until full moon appears at opposition, after which the visible part of the waning moon decreases for the remainder of the cycle.

balanced amplifier (NASA SP-7, 1965) An amplifier circuit in which there are two identical signal branches connected so as to operate in phase opposition and with input and output connections each balanced to ground. Also called push-pull amplifier .

( more) opposition A superior planet is said to be "in opposition" when it is directly on the opposite side of the Earth from the Sun. This is generally the closest it comes to the Earth and the time at which it is most easily visible.

78" for the long-sought constant from the opposition of Mars in 1877, and from combined heliometer observations at five observatories in 1888-1889 of the minor planets Iris, Victoria and Sappho, the apparently definitive value of 8.

-- Polar, ∨ Polaric, opposition ∨ contrast Logic, an opposition or contrast made by the existence of two opposite conceptions which are the extremes in a species, as white and black in colors; hence, ...

In opposition to the subgiant spectral class, which suggests that the star is beginning to evolve from being a core-hydrogen-fusing dwarf, ...

Astronomers call these close encounters "perihelic oppositions." Perihelic means Mars is near perihelion--its closest distance to our Sun.

HST 3 Views of Mars at Opposition These Hubble Space Telescope views provide the most detailed complete global coverage of the Red Planet ever seen from Earth.

Consciously or unconsciously, New Agers tend to redefine vocabulary borrowed from various belief systems, which can cause some confusion as well as increase opposition from skeptics and the traditional religions.

opposition), allowing all-night viewing when Mars is closest to the Earth. Successive oppositions occur at intervals of approximately 26 months.

This happens around its opposition to the Sun, which means it is 180° away from the Sun as seen from the Earth. When a planet is in opposition, you can see it rise approximately where the Sun rises, but 12 hours later.

The processes that act in opposition to gravity are various pressure forces. The pressure of the gas pushes back and resists gravitational infall. The resistive forces in a molecular cloud come from gas pressure, magnetic field, and turbulence.

Mars is best observed when it is at opposition (directly opposite the sun in earth's sky) and also at its closest distance from earth.

We had a melancholy start of 2003 with the Columbia tragedy; however, we then enjoyed the summer's wonderful opposition of Mars, and 2004 brought the spectacular rover landings on Mars, two bright springtime comets, ...

As the orbit of Mars is an eccentric ellipse its distance from the Earth at opposition (closest approach to the Earth) varies between 1.38 and 1.67 Astronomical Units (the mean distance of the Earth from the Sun is one Astronomical Unit).

The opposition divides the circle in the ratio 1:2, which corresponds to the octave. The sextile (5:6) corresponds to a minor third, the square (3:4) to a perfect fourth and the trine (2:3) to a perfect fifth.

SYZYGY Syzygy occurs when the moon (or a planet) is in opposition or conjuction with the Earth and Sun; the three bodies are positioned in a straight line. At syzygy, the moon (or planet) is seen as new or full (from Earth).

An emphasis on sense data as a source of knowledge, in opposition to the rationalist belief that reasoning is superior to experience. [F88] Enceladus ...

The year was 1610, and this brave soul who spoke the truth in the face of overwhelming opposition was Galileo. He would pay the price, but not yet.

aspect The apparent position of any of the planets or the Moon relative to the Sun, as seen from Earth. The four main aspects are conjunction, greatest elongation, opposition, and quadrature. Related category - CELESTIAL MECHANICS ...

Albedo is the ratio between the amount of light actually reflected and that which would be reflected by a uniformly scattering disk of the same size, both observed at opposition. Snow has an albedo of approximately 1 and coal an albedo of about 0.05.

Their speed however varies--the closer to the Sun, the faster (see section 10a and in particular Kepler's third law). Therefore, when the three outer planets are near opposition, the Earth orbiting closer to the Sun overtakes them, ...

tilt of a planet's axis of rotation open cluster a collection of young stars that formed together; they may or may not be still gravitationally bound; the youngest clusters are still embedded in the gas and dust out of which they formed opposition ...

See also: Time, Earth, Period, Year, Second