Astronomie - Die Wissenschaft von den Gestirnen

Tommyfare

Tommyfare

Well-known member
#281
systems, systems, systems, systems, systems, systems, systems, systems, systems
PSN-Name: Tommyfare
Spielt gerade: Pandemie
#281
Ich konnte nun endlich das Teleskop testen. Noch fehlen einige Sachen, ich hab die Aufnahmen mit dem Handy vorm Objektiv und das Teleskop frei hand gehalten gemacht. Filter gibts auch noch nicht.
 

Anhänge

R-TO-THE-L

R-TO-THE-L

e^(pi*i) + 1
#295
Spielt gerade: mit´m RKKV Prototyp
#295
JWST ist so ein geiles Teil
Ohne Witz, ich bekomm Gänsehaut wenn ich mir das anschau.

Man sieht hier dreimal die gleiche Galaxy auf dem selben Bild zu unterschiedlichen Zeitpunkten in ihrer Geschichte. :sabber:
Einfach nur Mindfuck. Vorallem wenn man sich ins Bewusstsein ruft, dass Galaxy vermutlich schon seit Millionen von Jahren nicht mehr existiert.
:panik:

Aber hey, Musk hat ja ne Rakete gestartet, die dabei vom Kurz abgekommen ist, keine Trennung vollbracht hat, beim Start die Rampe absolut zerstört hat und dann gesprengt werden musste; ist ja so viel wichtiger. :rolleyes:

Oder das Juice gestartet ist, bekommt man auch nichts mit von...



This observation from the NASA/ESA/CSA James Webb Space Telescope contains three different images of the same supernova-hosting galaxy, all of which were created by a colossal gravitational lens. Gravitational lensing occurs when a massive celestial body causes a sufficient curvature of spacetime to bend the path of light travelling past or through it, almost like a vast lens. In this case, the lens is the galaxy cluster RX J2129, located around 3.2 billion light-years from Earth in the constellation Aquarius. This annotated image of the cluster highlights the three images of the lensed galaxy, including the one where the supernova was detected.

Astronomers discovered the supernova in the triply-lensed background galaxy using observations from the NASA/ESA Hubble Space Telescope, and they suspected that they had found a very distant Type Ia supernova. These supernovae always produce a fairly consistent luminosity — at the same distance, one looks as bright as any other — which makes them particularly helpful to astronomers. As their distance from Earth is proportional to how dim they appear in the night sky, objects with known brightness can be used as 'standard candles' to measure astronomical distances.

The gravitational lens has created three lensed images of the background galaxy, which are not uniform in size, position or age. Because mass in the galaxy cluster is distributed unevenly, rays of light emitted by the supernova are bent by the lens in different amounts, and so they take longer or shorter paths to the viewer — resulting in separate images. The light that took the longest path gives us the oldest image of the galaxy, in which the supernova is still visible. The next image is of the galaxy as it appears roughly 320 days later than the first one, and the last image roughly 1000 days after the first. At both later points in time, the supernova has already faded from view. The name for the transient is AT 2022riv.

This observation was captured by Webb's Near-InfraRed Camera to measure the brightness of the lensed supernova. As part of the same programme, NIRSpec spectroscopy of the supernova was also obtained, which will allow comparison of this distant supernova to Type Ia supernovae in the nearby Universe. This is an important way to verify that one of astronomers’ tried-and-tested methods of measuring vast distances works as expected.

[Image description: The main image shows a large elliptical galaxy, surrounded by many small similar galaxies in a cluster, and background stars and galaxies. Three smaller pull-outs show three lensed images of a background galaxy, close up. One is labelled “~1000 days later”, one has a small star marked out as “AT 2022riv”, and one is labelled “~320 days later”.]
Klicken um auszuklappen...
Noch mehr schöne Webb Bilder








/spoiler]
 
Zuletzt editiert:
Ikarus87

Ikarus87

Well-known member
#299
Spielt gerade: an sich selber rum
#299
naja ohne Beweise kann man halt viel behaupten, warum tritt man an die Öffentlichkeit wenn man nichts belegen kann?

Ich persönlich glaub ja schon, dass es noch anderes Leben dort draußen gibt/gab. Der Faktor Zeit spielt halt da auch eine wichtige Rolle, Kann ja sein dass es vor 3 Millionen Jahren intelligentes Leben gab oder es wird noch kommen. Auf Technologisch fortgeschrittene Lebensformen die uns finden in genau unserer Epoche der Zeit glaube ich aber nicht. Mit etwas Glück finden wir auf dem Mars irgend so was wie verstorbenen Mikroben oder so...
 
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