| Piú viste - Deep Sky Objects |
NGC-6397-Graph.jpgNGC 6397 - The "White Dwarfs Hook"80 visiteThis graph schematically plots two populations of stars Hubble has seen in neighboring star cluster NGC 6397. The graph, a simplified version of the original data, plots stellar brightness (vertical axis) against stellar color-temperature. The normal main sequence stars in the cluster are plotted on the right curve.
The cooler a star is, the redder it appears and it diminishes in brightness.
Hubble has identified the very coolest and faintest normal stars in the cluster.
The curve on the left plots the white dwarf population of burned-out sunlike stars. It follows a normal "cooling slope" until the white dwarf begins to look bluer and hook toward the left BUT the dwarfs aren't getting hotter!
Chemical changes in their atmospheres make them look cooler.
This predicted "white dwarfs hook" has never been seen before.
|
|
NGC-6888-01.jpgNGC 6888 - The "Bubble Nebula"80 visite"...The Heavens are telling the Glory of God; and the firmament proclaims His handiwork..."
- Psalm 19:1
|
|
The_Markarian_Chain.jpgThe "Markarian Chain"80 visite"...Quod sis esse velis, nihilque malis..."
(Marziale)
"...Devi essere quello che sei, e nulla di più..."
|
|
NGC-4435_and_4438.jpgNGC 4435 and 4438 - Interacting Galaxies80 visite"...Canis timidus vehementius latrat quam mordet..."
(Q. Curzio)
"...Il cane timido (pavido) abbaia più forte di quanto morda..."
|
|
CL0024+17_Galaxy_Cluster.jpgDark Matter Ring Modeled around Galaxy Cluster CL0024+1780 visite"...What literature can and should do, is change the people who teach the people who don't read the books..."
A.S. ByattMareKromium
|
|
He_2-47.jpgHe 2-47 - Planetary Nebula80 visite"...Falsos in Amore, (sed) odia non fingere..."
(Tacito)
"...Si può esser falsi in Amore, ma l'odio non sa fingere..." (trad. libera)MareKromium
|
|
NGC-474.jpgNGC 474 - Interacting Galaxies80 visite"...La Memoria è fida riserva dell'Intelletto ed, in pari tempo, salutare freno della Fantasia..."
A. MaioranaMareKromium
|
|
NGC-3372.jpgNGC 3372 - The "Carina Nebula"80 visite"...See, the whole land is before you: go wherever you think it is good and right to go..."
- Jeremiah, 40:4MareKromium
|
|
NGC-3808A-B.jpgNGC 3808A and NGC 3808B (a.k.a. Arp 87)80 visite"...Un passo alla volta, mi basta..."
Mahatma Gandhi
MareKromium
|
|
NGC-2359.jpgNGC 2359 - The "Thor's Helmet Nebula"80 visite"Sustine et Abstine"
(detto Stoico)
"Sopporta (il dolore) ed Astieniti (dal perseguire il piacere)"MareKromium
|
|
NGC-3256-HST.jpgNGC 3256 - Interacting Galaxy80 visite"...Natura infirmatibus humanae, tardiora sunt remedia quam mala..."
(Tacito)
"...(ed è) per Natura propria dell'umana infermità che i rimedi (ai mali) sono sempre tardivi rispetto ai (alla forza distruttiva dei) mali stessi..."MareKromium
|
|
NGC-1316.jpgNGC 1316 - Spiral Galaxy80 visite"...Hell, is just a word; reality, is much, much worse..."
(dal film "Event Horizon")MareKromium
|
|
| 1039 immagini su 87 pagina(e) |
 |
|
|
|
|
61 | |
|
|
|
|
