What is the last letter of the Greek alphabet?
AnswerOmega
Omega is the final Greek letter, as in the phrase 'alpha and omega', meaning beginning and end.
Science · Facts & stats
Alpha facts & stats
7 fact-checked facts about the letter alpha and its uses, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Which Latin letter descends from alpha?
AnswerA
The Latin A came from the Greek alpha, itself adapted from a Phoenician letter.
Going deeper
How many letters are in the Greek alphabet?
Answer24
The classical Greek alphabet has 24 letters, from alpha to omega.
What is Alpha Centauri?
AnswerThe nearest star system to the Solar System
Alpha Centauri, about 4.4 light-years away, is the closest star system to us.
In statistics, the Greek letter alpha commonly denotes what?
AnswerThe significance level of a test
Alpha is the threshold, often 0.05, for deciding whether a result is statistically significant.
Expert level
Which Phoenician letter did alpha develop from?
AnswerAleph
The Greeks adapted the Phoenician aleph, whose name meant ox, into alpha.
In alpha decay, by how much does an atom's mass number drop?
Answer4
Losing an alpha particle removes 2 protons and 2 neutrons, lowering mass number by 4.
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