Centaury

Spaceships capable of reaching stars other than the sun are expected to be more directly involved with plasmas than are contemporary spacecraft, in terms of their motion through the interstellar plasmas and their propulsion. Very high velocities are expected to be required for travel to other stars, eg, Proxima Centauri, which is 4.3 light years distant and would require 43 years at one-tenth the speed of light. 

Parts Wormwood 20 Parts Lesser centaury 20 Parts Bitter-orange peel 10 Parts Bogbean 10 Parts Calamus rhizome 10 Parts Gentian 10 Parts Cinnamom... 

Parts Lesser centaury 25 Parts Peppermint leaves... 

Tausend-guldenkraut, n. leaser centaury (Ery thraea centaurium). -schon, n. daisy. Tausendstel, n. thousandth (part), tautomer, a. tautomeric. 

The search for extrasolar life requires us to find planets outside the solar system. But since stars are only visible as small dots of light, it will be very difficult to find planets in outer space, since these do not emit light. This is true even for the nearest star, Alpha Centauri, which is about 4.3 light years away (roughly 7,000 times the distance from the sun to Pluto). 

Fig. 1. The Galactic fluorine abundances obtained to date. Three samples are represented the disk of the Milky Way (crosses), including the two young Orion pre-main-sequence stars (open circles), and u> Centauri giants (filled circles).

Abstract. We present preliminary results of an extensive low and high-resolution ESO-VLT spectroscopic survey of Subgiant stars in the stellar system uj Centauri. Basing on infrared Ca II triplet lines we derived metallicities and radial velocities for more than 110 stars belonging to different stellar populations of the system. The most metal rich component, the SGB-a, appears to have metallicity [Fe/H] -0.5. Moreover, SGB-a stars have been found to stray from the dynamical behaviour of the bulk population. Such evidence adds new puzzling questions on the formation and the chemical enrichment history of this stellar system. 

The closest star to our Sun is one of the three stars in the a centauri system called proxima centauri. The distance to proxima centauri is 4.34 ly, so the measured angle can be calculated from Equation 2.8 ... 

Use this as a unit factor to determine the distance in miles between Alpha Centauri and our solar system. 

P. G. Righetti. The Alpher, Bethe, Gamow of Isoelectric Focusing, the Alpha-Centaury of Electrokinetic Methodologies. I. Electrophoresis, 27(2006) 923-938. 

Centaury is reputed to act as a bitter, an aromatic, and a stomachic. Traditionally, it has been used for anorexia and dyspepsia. 

R. L. Hool recommends equal parts of Centaury and Raspberry leaves in a similar infusion and dosage to above as a tonic for delicate and elderly people. He considers that Centaury "acts particularly upon the heart as a general strengthener." Coffin stresses its value in jaundice. 

STOMACHICS Stimulant medicines which act specifically upon the stomach.—Avens, Centaury, Chamomile, Golden Seal, Turkey Rhubarb. 

TONICS Medicines which assist towards a higher bodily tone and increased vigour.—Barberry, Buckbean, Calumba, Centaury,... 

Our fastest spaceships can travel about one six-thousandth the speed of light. Our fastest ships would require 25,000 years to reach Proxima Centauri, the closest star. Radio messages would take decades to reach our neighbors and thousands of years to cross the Galaxy. 

Centauri because its absolute magnitude is smaller than Alpha Centauri s. The reason for this reversal is that Arcturus is so much further away that it appears dimmer to our eye than Alpha Centauri. ... 

Sir, I first got interested in stars in the late 1960s by watching the TV series Lost in Space. The show describes the travels of a human family exploring strange planets. Their mission was to begin colonization of a planet near the star Alpha Centauri. Unfortunately, their craft went off course, and they lost all contact with Earth. ... 

One day, a villager in Ethiopia entered a strange URL into his web browser http //www.god.ac, the suffix ac represents domain names on planets in the vicinity of Alpha Centauri. At this point, your species discovered God, and we discovered him a few days later. ... 

When you look up into the night sky, you never see red dwarfs. They re faint because of their small size and low temperature. Only the nearest red dwarf stars, up to about 90 light-years away, are visible to even the most powerful earth-based telescopes. Proxima Centauri, a member of the Alpha Centauri triple star system, is a red dwarf, and we ve discussed that it is the closest star to the Earth. Despite its proximity, it is a hundred times too faint to see with the naked eye. In contrast, we can see many larger stars using our eyes, even when these stars are thousands of light-years away. 

Red dwarfs Small, cool, very faint, Main Sequence star. Surface temperature is less than 4,000 K. Some speculate that these are the most common type of star in the Galaxy. The nearest red dwarf is Proxima Centauri. Red dwarfs are not visible to the naked eye and are about 0.08 to 0.43 solar masses. 

Figure 9.1 A drawing of a constellation Taurus from Johann Bayer s Uranometria (Augsburg 1603). Bayer used Greek letters to designate the brightness of stars. The bright star in the Bull s eye became alpha Tauri, just like the brightest star in the constellation Centaur became our familiar alpha Centauri.

Like many red dwarfs, Proxima or Alpha Centauri C is a flare star. Flare stars can brighten suddenly to many times their normal luminosity. The cause is thought to be a sudden and intense outburst of radiation on or above the star s surface. An increase in radio emission is often detected simultaneously with the optical outburst. 

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