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Aldebaran.jpgAldebaran120 visite"Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying."
(Traduzione)
(Esistono due possibilità: o che siamo soli nell'Universo o che non lo siamo.
Entrambe sono ugualmente terrificanti)
(Arthur C. Clarke)MareKromiumLug 10, 2022
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Regulus.jpgRegulus184 visiteMan must understand his Universe in order to understand his destiny.
(L'uomo deve capire il suo Universo per capire il suo destino)
(Neil Armstrong)MareKromiumLug 10, 2022
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Procyon.jpgProcyon173 visite"The universe is not hostile, nor yet is it friendly. It is simply indifferent."
(L'universo non è ostile né amichevole: é semplicemente indifferente)
(John Haynes Holmes)MareKromiumLug 10, 2022
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Magnetar.jpgMagnetar104 visiteUn oggetto cosmico misterioso e mai visto finora stato scoperto da un gruppo di astrofisici del Centro Internazionale di ricerca per la radio astronomia dell'Universit Curtin in Australia. Il corpo celeste assomiglia a una sorta di faro che emette, a intervalli regolari di circa 20 minuti, lampi d'onde radio molto intensi. Andrea Possenti, dell'Istituto Nazionale di Astrofisica (INAF) a Cagliari, commentando la ricerca ha detto all'Ansa che si tratta di un tipo di impulso radio finora mai riscontrato. Questi anomali impulsi sono dei pacchetti di onde radio, molto intensi e lunghi alcune decine di secondi, che si ripetono a intervalli regolari di poco pi di 18 minuti.
Da decenni - ha detto Possenti - conosciamo e studiamo impulsi simili a questi ,che riteniamo siano prodotti da stelle molto compatte note come pulsar. In generale, per. le pulsar emettono impulsi molto pi brevi e molto pi rapidamente, della durata compresa tra pochi millisecondi e pochi secondi. Una sorgente come quella scoperta descritta su Nature qualcosa di molto diverso.
L'anomalia, secondo gli autori della ricerca, potrebbe dimostrare l'esistenza di una sottofamiglia di pulsar finora sconosciuta, particolarmente lente, oppure essere prodotta da una Magnetar, ossia stelle di neutroni caratterizzate da campi magnetici molto intensi e ancora poco studiate. Curiosamente il segnale osservato molto intenso, eppure era finora sfuggito alle rilevazioni.
Ci - ha rilevato Possenti - potrebbe essere dovuto a due motivi: uno tecnico ed uno pratico: dato che le pulsar a noi note hanno periodi e impulsi molto rapidi, tutti gli strumenti che cercano questi segnali si focalizzano su intervalli molto pi brevi. A questo si aggiunge il problema delle interferenze. Le Onde Radio sono molto usate nelle attivit umane e quindi distinguere un segnale anomalo proveniente dal cielo in realt molto complicato.
La scoperta di queste nuove sorgenti apre ora alla possibilit di ipotizzare nuovi esperimenti e campagne di osservazione per andare alla caccia di questi nuovi oggetti cosmici.MareKromiumApr 10, 2022
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Beta_Pictoris~0.jpgBeta Pictoris131 visite
Oben am Himmel steht ein einsamer Stern,
Da wohnt unsere Liebe,
So weit entfernt...
Hab' dich lang nicht mehr gesehen,
Ich denk' auch gar nicht mehr an dich;
Ich kann schon wieder aufrecht gehen,
Das konnt' ich vor paar Wochen nicht...
Hast gesagt du hast 'nen andern
Hab' gesagt ist mir egal,
Du wirst endlos weiter wandern,
Und fr mich war's freier Fall,
Ich kann ohne dich nicht leben...
Hab' ich gedacht das war nicht wahr,
Und oben am Himmel steht ein einsamer Stern:
Da wohnt unsere Liebe, so weit entfernt...
So wurde aus 'ner Sonne nur ein kalter Planet,
Der Lichtjahre weg (der Lichtjahre weg),
Am Nachthimmel steht (am Nachthimmel steht)...
Und schau' ich mal zum Himmel nach dem kleinen Stern,
Dann denke ich an dich ich tu'
Das immer noch gern...
Jeder Blick nach oben, erinnert mich daran;
Dass es Dinge gibt (Dass es Dinge gibt),
Die man nicht halten kann (die man nicht halten kann)...
Ich hab' gedacht ich msste sterben,
Als du sagtest es ist aus;
Um mich herum nur'n Haufen Scherben,
Ich dacht' da komm' ich niemals raus...
Dabei fing mein ganzes Leben
Als du weggingst eigentlich an...
Und oben am Himmel steht ein einsamer Stern,
Da wohnt unsere Liebe, so weit entfernt;
So wurde aus 'ner Sonne nur ein kalter Planet,
Der Lichtjahre weg (der Lichtjahre weg),
Am Nachthimmel steht (am Nachthimmel steht)...
Und schau' ich mal zum Himmel nach dem kleinen Stern,
Dann denke ich an dich ich tu' das immer noch gern;
Jeder Blick nach oben, erinnert mich daran,
Dass es Dinge gibt (dass es Dinge gibt),
Die man nicht halten kann (die man nicht halten kann)...
So denke ich manchmal, still an dich,
Weil ganz vergessen kann, ich dich nicht,
Ein Stern ist ein Stern und kein schwarzes Loch,
Es wird immer so sein, es wird immer zu sein...
Verdammt ich lieb' dich noch!
Und oben am Himmel steht ein einsamer Stern,
Da wohnt unsere Liebe,
So weit entfernt,
So wurde aus 'ner Sonne nur ein kalter Planet,
Der Lichtjahre weg ,
Der Lichtjahre weg)...
Am Nachthimmel steht (am Nachthimmel steht)
Und schau' ich mal zum Himmel nach dem kleinen Stern,
Dann denke ich an dich ich tu' das immer noch gern,
Jeder Blick nach oben, erinnert mich daran
Dass es Dinge gibt (dass es Dinge gibt)
Die man nicht halten kann (die man nicht halten kann)...
By Matthias ReimMareKromiumMar 17, 2022
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Alpha_and_Beta_Centauri.jpgAlpha and Beta Centauri153 visite
Was erklrst du deinem Kind
Wenn es zu versteh'n beginnt
Und das Leben nicht kennt?
Fragen die es an dich stellt
Sind das Universum dieser Welt
Neuentdeckt und noch so fremd
Das was es sucht, das was es lenkt
Ist das Prinzip Mensch.
Jedes Minus hat sein Plus
Jeder Anfang seinen Schluss
Jedes Chaos hat sein System
Das was uns sucht, findet und lenkt
Ist das Prinzip Mensch.
Was wir fragen hat keine Namen,
Keine Zahlen, ist keine Physik;
Wir knnen nur fragen, suchen und ahnen,
Denn eine Antwort, gibt es nicht...
Das Wunder bist du, in jedem Moment,
Denn was in dir lebt,
Ist das Prinzip Mensch.
Was bestimmt, wohin wir gehn,
Wer erklrt uns das Versteh'n,
Und das Ende der Ewigkeit?
Woher kommt mein Gefhl fr mich?
Warum denk ich und fhl fr dich?
Logisch ist nur das, was ich weiss,
Was uns verbindet und gleichzeitig trennt:
Ist das Prinzip Mensch
Was wir fragen hat keine Namen,
Keine Zahlen, ist keine Physik...
Wir knnen nur fragen, suchen und ahnen,
Denn eine Antwort, gibt es nicht;
Das Wunder bist du,
In jedem Moment!
Denn was in dir lebt,
Ist das Prinzip Mensch!
by Peter SchillingMareKromiumMar 17, 2022
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Tachyons-4.jpgTime, Space and Light-Cones112 visiteSimultaneous is not simultaneous. Space and Time do not exist. These, and other strange and wonderful things, are the hallmarks of Einsteins' Theory of Relativity. Something cant move through Space without moving through Time as well (note: simultaneously!). The Theory of Relativity dispenses with Time and Space, and instead describes a new thing called Spacetime.
Imagine a train moving in a straight line Eastward. We can map its movement through Space, Time or, best of all, Spacetime! With a simple Spacetime graph, we map Space horizontally and Time vertically. In the real World, there are three Dimensions of Space length, width and height. Thankfully, theere is only one Dimension of Time, and it runs from the Past to the Future (unless youre looking backwards.) To graph something using all four dimensions is hard, so instead we just take two Dimensions of Space and make a horizontal plane, then map Time vertically.
Now imagine a flash of light. Say you were standing on a hill on a moonless night and turned on a torch for a second. The light would spread out in every direction, lighting first the bushes near by, then later the trees in the distance. If we think about it in just 2 dimensions we can draw it like an expanding circular wave in a pond, maybe caused by a rock we threw inside it. We all did something like that in our life! Now, to get to our case in point, we have to map this "Event" (I call it "splash" because it is easier to imagine than a flash in the night, even though the principle behing them - the Events - are absolutely the same).
Now, if we map Time vertically, and stack the sequential (and increasing in size) "waves", which pile-up one on top of the other, we get a cone whose Summit looks down. The flat area is "our Present" Time (see the upper portion of the imaged picture). Now, let's go back to the Light. A Light Cone is a flash of light moving through Spacetime. Usually people draw it as two Cones: the bottom one is Light collapsing into a single Event, and the top one is it exploding out again. (watch the imaged picture again and very well)
Did you get it?
But "why all this"? Is it really useful to do that? Well, I do not know. Some people think that, in this way, we can better imagine the World. It shows how the Past can influence the Present and the Future. When the Light Cones overlap, it means that two Objects - or Events ! - interact/ed with each other. Every Event in the Universe has an associated Light Cone, so this is a (kind of) mathematical way to represent the Universe, and the basis for lots of complex Physics (such as curved Spacetime, and why simultaneous Events are relative to the observer.)
The Theory of Relativity replaced the absoluteness of Space and Time with the absoluteness of the Speed of Light. However, all that given, I do believe that this "speculation" is very inspirational, but I also - and very humbly - think that something "BIG" is still missing here.MareKromiumDic 03, 2021
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Tachyons-3.gifHow to contact "Them"? Tachyon Signal (3)195 visitePer cui, in chiusura (tre frames dedicati alla "Drake University" (Iowa - USA) ed a qualche Ente di Les Moines - sempre Iowa - USA -, che amano leggerci cos tanto), possiamo dire "NON VERO che (in Teoria) eventuali altre Culture non riusciamo a contattarle e/o non ci hanno mai contattato perch nessuno c' l fuori o, se c', non ascolta"!
Il problema che ABBIAMO SBAGLIATO (forse) il MEZZO DI COMUNICAZIONE!
Oppure "Loro" ci ritenevano (e ritengono) pi "evoluti" di quanto siamo realmente. Se i Messaggi fossero stati inviati da "Loro" mediante Segnali Tachioni, allora non li abbiamo mai ricevuti perch, quando arrivarono, non avevamo i mezzi per captarli. Ed i "nostri" messaggi (impulsi radio) non gli arriveranno MAI in tempi ragionevoli, perch son troppo "lenti".
Soluzione? Per "Loro", inviare Messaggi Tachioni in maniera continuativa (tipo "radio-faro"), se hanno interesse. Per noi, EVOLVERE! Abbiamo menti e mezzi a volont per arrivare ad un "Segnale Tachione", ma manca - temo - la "Volont" di arrivarci.
Paura? Altri "interessi"? Problematiche contingenti pi "serie"?...Oppure, ragionando per assurdo (espressione che i Matematici adorano...), lo abbiamo gi fatto ed un contatto gi stato, in fine, stabilito, nel silenzio totale? Dalla Scienza alla Fantascienza e vice-versa.
Credete e/o pensate quello che Vi piace di pi. Qui non troverete MAI risposte (non siamo cos arroganti, come gli "Scienziati" di oggi sono, oltre ogni ragionevole limite di accettabilit ed in TUTTI i Campi!). Qui troverete solo spunti e domande, domande, domande...MareKromiumDic 02, 2021
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Tachyons-1.jpgHow to contact "Them"? Tachyon Signal (1)148 visiteA Tachyon (or Tachyonic Particle) is a (not very much) hypothetical Particle that always travels faster than Light. Most physicists believe that faster-than-Light Particles cannot exist because they are not consistent with the known (note: so far "known"!) Laws of Physics. If such Particles did exist, and could send signals faster than light, then according to the Theory (note: "Theory"...) of Relativity, they would violate Causality, leading to logical paradoxes, like the "Grandfather Paradox!. Tachyons would also exhibit the unusual property of increasing in speed as their energy decreases, and would require infinite energy to slow down to the speed of Light. No experimental evidence for the existence of such Particles has been found. (note: false!)
In the 1967 paper that coined the term, Gerald Feinberg proposed that Tachyonic Particles could be made from excitations of a Quantum Field with imaginary mass. However, it was soon realized that Feinberg's model did not in fact allow for Superluminal (faster-than-light) speeds. Nevertheless, in modern Physics, the term Tachyon often refers to "imaginary" Mass fields rather than to "faster-than-light Particles".
Such (imaginary...) Fields have come to play a significant role in modern Physics.
The term comes from the Greek, where "tachy" means "fast". The complementary Particle types are called Luxons (which always move at the speed of light) and Bradyons (which always move slower than light); both of these Particle types are known to exist.MareKromiumDic 02, 2021
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Tachyons-2.gifHow to contact "Them"? Tachyon Signal (2)240 visite"Causality" is a fundamental Principle of Physics. If Tachyons can transmit information faster than Light then, according to General Relativity, they should violate the Law of Causality, leading to logical Paradoxes of the "kill your own grandfather" type. This is often illustrated with thought experiments such as the "Tachyon Telephone Paradox" or "Logically Pernicious self-Inhibitor."
The problem can be understood (note: really?) in terms of the Relativity of simultaneity in the Special Relativity Theory, which says that different "inertial reference frames" will disagree on whether two events at different locations happened "at the same time" or not, and they can also disagree on the order of the two events (technically, these disagreements occur when the spacetime interval between the events is "space-like", meaning that neither event lies in the future Light Cone of the other). If one of the two events represents the sending of a signal from one location and the second event represents the reception of the same signal at another location, then as long as the signal is moving at the Speed of lLght or slower, the Mathematics of Simultaneity ensures that all reference frames agree that the transmission-event happened before the reception-event.
However, in the case of a hypothetical signal moving faster than light, there would always be some frames in which the signal was received BEFORE it was sent, so that the signal could be said to have moved backward in time.
Because one of the two fundamental postulates of Special Relativity says that the Laws of Physics should work the same way in every Inertial Frame, if it is possible for signals to move backward in time in any one frame, it must be possible (that they move backward) in all frames. This means that if observer "A" sends a signal to observer "B" which moves faster than light in "A'"s frame but backwards in time in "B'"s frame, and then "B" sends a reply which moves faster than light in "B"'s frame but backwards in time in "A"'s frame, it could work out that "A" receives the reply before sending the original signal, challenging Causality in every frame and opening the door to severe Logical Paradoxes.MareKromiumDic 02, 2021
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IC-1396~4.jpgThe "Elephant's Trunk Nebula" in IC-1396116 visite"Thus, the term "Distorting Mirror" or "Mirror Deformation" captures the meaning, if not the essence, of our reasoning.
And, in reality, as we have seen, the Distorted World (sic!) fulfills the necessary, albeit hateful, function of rendering all possible and imaginable Entities and Processes indeterminate and indeterminable, and consequently, it also makes the Universe, theoretically and practically, inevitable."
(Traduzione)
"...quindi il termine "Specchio Deformante" o "Deformazione da Specchio" rende il senso, se non la Sostanza, del nostro ragionamento.
E, in realtà, come si è visto, il Mondo Distorto (sic!) adempie la funzione, necessaria benché odiosa, di rendere indeterminati ed indeterminabili tutte le Entità ed i Procedimenti possibili ed immaginabili e, di conseguenza, rende anche l'Universo, teoricamente come praticamente, inevitabile...".
Da "Meditazioni di un Matematico", di Edgar Hope Grief - Free Press di Euclid CityMareKromiumAgo 29, 2021
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Black_Hole-M_87.jpgBlack Hole in the "Heart" of M 87200 visiteThe jets emanating from a famous Black Hole are cruising along at about 99% the speed of light, according to observations from NASA's Chandra X-Ray Observatory.
Researchers spotted the speedy jets emanating from a Black Hole in the galaxy Messier 87 the same Black Hole that was imaged directly for the first time by the Event Horizon Telescope.
In this wide-field image of Messier 87 from the Chandra X-ray Observatory, the white box indicates the approximate location of the black hole's jet.MareKromiumMag 20, 2020
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