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Generally, true, but there are rare exceptions. For example, Betelgeuse is "Alpha Orionis" while Rigel, generally brighter then Betelgeuse, is "Beta Orionis". Betelgeuse is a somewhat variable star, and when the Bayer designations were assigned, Betelgeuse was the brighter star.

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Q: The brightest star in a given constellation is designated as alpha?
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How far is the constellation Aries from us?

A Constellation cannot be given a distance, as they are always made up of stars with differing distances from us. The nearest is Teegarden's Star at around 12.6 light years, while the brightest Alpha Arietis is about 66 light years from us. = =


Which is brighter a beta star or gamma star?

Usually, the beta star. Stars are given names based on the constellation that they are in, with the brightest star in the constellation being "Alpha", the second brightest being "Beta, and the third-brightest being "Gamma" - and so on through the rest of the Greek alphabet. However, stars _can_ change their brightness. In the constellation Orion, the red supergiant star Betelgeuse was, in the 1600's when the stars were cataloged, the brightest star in Orion. So Betelgeuse was listed as "Alpha Orionis", while Rigel, a close second, was listed as "Beta Orionis". But Betelgeuse has been slimming down, perhaps beginning the collapse which will result in its destruction as a supernova. At any rate, Rigel is generally brighter than Betelgeuse this century. Not always; Betelgeuse is a variable star, and at its brightest, it is still brighter than Rigel.


What is the most likely Greek letter name of the second brightest star in the constellation Lyra?

The most likely is "beta". The star is called " β (beta) Lyrae ". Beta is the second letter in the Greek alphabet. The idea was to give Greek letters (in the order of that alphabet) according to the order of apparent brightness of stars in a constellation. However the system is not completely consistent. For example Rigel is the brightest star in Orion, but it was given the letter beta.


What particle is given off during the change from Radium to Radon?

An alpha particle


Is alpha particle the slowest?

For a given amount of energy, yes. Because its the most massive.

Related questions

How did alpha centauri get its name?

It's the brightest star in the constellation Centaurus. Star names are assigned based on the genitive form of the name of the constellation they're in, with the brighter stars (usually) being given low Greek letter names.


How far is the constellation Aries from us?

A Constellation cannot be given a distance, as they are always made up of stars with differing distances from us. The nearest is Teegarden's Star at around 12.6 light years, while the brightest Alpha Arietis is about 66 light years from us. = =


Which is brighter a beta star or gamma star?

Usually, the beta star. Stars are given names based on the constellation that they are in, with the brightest star in the constellation being "Alpha", the second brightest being "Beta, and the third-brightest being "Gamma" - and so on through the rest of the Greek alphabet. However, stars _can_ change their brightness. In the constellation Orion, the red supergiant star Betelgeuse was, in the 1600's when the stars were cataloged, the brightest star in Orion. So Betelgeuse was listed as "Alpha Orionis", while Rigel, a close second, was listed as "Beta Orionis". But Betelgeuse has been slimming down, perhaps beginning the collapse which will result in its destruction as a supernova. At any rate, Rigel is generally brighter than Betelgeuse this century. Not always; Betelgeuse is a variable star, and at its brightest, it is still brighter than Rigel.


How does the Greek letter designation of the star give you clues both to its location and its brightness?

The Greek letters were given by Bayer in an early star catalogue, where the brightest star in each constellation was called alpha, with the Latin name of the constellation in the genitive (possessive) case. So the bright star called Capella in Auriga is also called Alpha Aurigae, which means 'Alpha of Auriga'. The Greek letter gives a rough idea of the brightness . . if there is a star called 'omega' in any constellation it would definitely be a dim one. As to "location", I can't see there is any clue about that.


What is the star nearest to earth except the sun?

That would be one of the members of the multiple-star system that appears as the brightest star in the southern constellation "Centaurus". The system was never given any particular name, and is simply referred to as "Alpha Centauri", which just means the "brightest star in Centaurus". It's about 4.4 light years from our solar system, which is something like 25,900,000,000,000 miles.


What does a star Greek letter designation tell you that its ancient Arabic name doesn't?

The first letters of the Greek alphabet are usually given to the brightest stars in the constellation.


How do scientist named stars?

Some of the brightest stars have names given a long time ago - e.g. Regulus, Sirius, Toliman. Many others are mainly known by a Greek letter and the genitive form of the constellation, e.g. Alpha Canis Majoris (= Sirius), Gamma Cruxis, but that is only used for a few stars in every constellation. Thousands or millions of others are simply known by a catalog number.


Are the star's in a constellation really close together?

In most cases the stars in any given constellation are completely unconnected. They are merely in the same direction in the sky as seen from Earth. They are made up of dim nearby stars and bright far away stars. Take the constellation Centaurus in the southern hemisphere for example. The brightest star in the constellation Alpha Centauri which is in fact 2 stars of the 3 that make up the Alpha Centauri star system. It is the closest Proxima Centauri is only 4.2 light years away and Alpha Centauri A & B only 4.3 light years. The next brightest star Beta Centauri a binary star system is 525 light years away. The next Gamma Centauri a binary system some 130 light years. The only constellation in which many of the stars are associated is the northern constellation Ursa Major. The famous asterism within the constellation is the "Big Dipper" or the "Plough". 5 of the stars make up part of what is known as the Ursa Major Moving Group. This is a number of stars that are roughly the same distance from Earth (about 80 light years) and also seem to be moving in the same direction through space.


How far away is the star beta?

You haven't given enough of a name, unless I am completely misreading your question. the 'beta' means that the star named right after it is the second brightest star in the constellation... you don't give the constellation name. Beta Centauri would be an example.


What is the most likely Greek letter name of the second brightest star in the constellation Lyra?

The most likely is "beta". The star is called " β (beta) Lyrae ". Beta is the second letter in the Greek alphabet. The idea was to give Greek letters (in the order of that alphabet) according to the order of apparent brightness of stars in a constellation. However the system is not completely consistent. For example Rigel is the brightest star in Orion, but it was given the letter beta.


Is the biggest star in a constellation usually labeled with the Greek beta symbol?

No, usually the brightest star is labelled alpha but there are a few exceptions e.g. Orion. The brightest star is Rigel but that is labelled Beta, while the next brightest, Betelgeuse, is labelled alpha.


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