| Piú viste - The Universe Inside |
Solar_Eclipse_1999-MIR.jpgMacular Degeneration on a Planetary Scale155 visiteCaption NASA, from "NASA - Picture of the Day" del giorno 2 Gennaio 2011:"Here is what the Earth looks like during a Solar Eclipse.
The shadow of the Moon can be seen darkening part of Earth. This shadow moved across the Earth at nearly 2000 Km-per-hour.
Only observers near the center of the dark circle can see a Total Solar Eclipse - others see a Partial Eclipse where only part of the Sun appears blocked by the Moon.
This spectacular picture of the 1999 August 11 Solar Eclipse was one of the last ever taken from the Mir Space Station. The two bright spots that appear on the upper left are thought to be Jupiter and Saturn. Mir was deorbited in a controlled re-entry in 2001".MareKromium
|
|
Pseudo-Crater.jpgPseudo-Crater <-- or --> True-Crater154 visite"...Laddove non c'è Verità non ci può neppure essere Bellezza..."
P.C. Floegers
|
|
Max-014.jpgDreams never die...152 visitenessun commentoMareKromium
|
|
lake_of_legends_1600.jpgNevermore...151 visite
|
|
Solaris-3.jpgSolaris151 visite"I only know one thing. When I... When I sleep, I know no fear, no hope, no trouble, no bliss, Blessings on him he who invented sleep. The common coin that purchases all things, the balance that levels shepherd king, fool and wise man. There is only one bad thing about sound sleep. They say it closely resembles death".MareKromium
|
|
Sundogs1.jpgThe "Dogs of the Sun"150 visiteI "Cani del Sole", un evento naturale decisamente curioso e, purtroppo, piuttosto raro dalle nostre parti (diciamo purtroppo poichè si tratta di un fenomeno alquanto suggestivo). Secondo i Navajo, l'apparizione dei due (apparenti) Soli Minori (i "cani", appunto) accanto al Sole Maggiore, costituiva di regola un presagio favorevole e, per i guerrieri/cacciatori, il verificarsi di questa "apparizione" costituiva l'annuncio di una stagione di caccia (o anche di una semplice "battuta", magari) particolarmente favorevole. I "Cani del Sole" e la relativa leggenda vennero anche - incidentalmente - ripresi nel film (ormai entrato nella Storia del Cinema) "The Deer Hunter", con R. de Niro.
|
|
sky_splash_1600.jpgSky-Splash!150 visite
|
|
Dark_Matter~0.jpgDark Matter150 visiteDark matter is a form of matter thought to account for approximately 85% of the matter in the universe and about a quarter of its total mass–energy density or about 2.241×108722,27 kg/m3. Its presence is implied in a variety of astrophysical observations, including gravitational effects that cannot be explained by accepted theories of gravity unless more matter is present than can be seen. For this reason, most experts think that dark matter is abundant in the universe and that it has had a strong influence on its structure and evolution. Dark matter is called dark because it does not appear to interact with the electromagnetic field, which means it does not absorb, reflect or emit electromagnetic radiation, and is therefore difficult to detect.
Primary evidence for dark matter comes from calculations showing that many galaxies would fly apart, or that they would not have formed or would not move as they do, if they did not contain a large amount of unseen matter. Other lines of evidence include observations in gravitational lensing and in the cosmic microwave background, along with astronomical observations of the observable universe's current structure, the formation and evolution of galaxies, mass location during galactic collisions and the motion of galaxies within galaxy clusters. In the standard Lambda-CDM model of cosmology, the total mass–energy of the universe contains 5% ordinary matter and energy, 27% dark matter and 68% of a form of energy known as dark energy. Thus, dark matter constitutes 85% of total mass, while dark energy plus dark matter constitute 95% of total mass–energy content.
Because dark matter has not yet been observed directly, if it exists, it must barely interact with ordinary baryonic matter and radiation, except through gravity. Most dark matter is thought to be non-baryonic in nature; it may be composed of some as-yet undiscovered subatomic particles. MareKromium
|
|
Earth_Impact_Craters_-_Gosses_Bluff_Crater_-_Australia.jpgGosses Bluff Crater (Australia)150 visiteSituato nel Northern Territory meridionale, l'imponente cratere meteorico Gosses Bluff ha un diametro di 5 km e un'altezza del bordo di 200 metri. Il sito e' noto come Tnorala agli aborigeni occidentali di Arrernte ed e' un luogo sacro.MareKromium
|
|
Earth_Impact_Craters_-_Kaali_Crater_-_Estonia.jpgKaali Crater (Eastland)150 visiteKaali e' il nome collettivo di un gruppo di nove laghi di crateri meteoritici nel villaggio di Kaali, sull'isola estone di Saaremaa. La formazione dell'ammasso e' datata poco dopo il 1530-1450 a.C.MareKromium
|
|
Moon and Companions~0.jpgMoon, Mars and Venus149 visiteDa "NASA - Picture of the Day" del 19 Ottobre 2005:"On another October 19, in 1899, a 17 year-old Robert Goddard climbed a cherry tree on a beautiful autumn afternoon in Worcester, Massachusetts. Inspired by H.G. Wells' "War of the Worlds" and gazing out across a meadow, young Goddard imagined it would be wonderful to make a device that had the possibility of ascending to Mars. Forever more he felt his life had a purpose and in the following years his diary entries record October 19th as "Anniversary Day", the anniversary of his ascent into the cherry tree. By 1926 he had designed, built, and flown the world's first liquid fuel rocket. Mars is just visible through the trees at the lower right in this dramatic sky view that also features the Moon and Venus - all visited by liquid fuel rockets constructed on principles developed by Goddard".
|
|
Earth__Impact_Craters_-_Acraman_Crater_-_Australia.jpgAcraman Crater (Australia)149 visiteCreato dall'impatto di un asteroide 590 milioni di anni fa, il cratere Acraman (Dia. 40 Km c.a.) nella Australia meridionale e' definito dal lago Acraman.MareKromium
|
|
| 476 immagini su 40 pagina(e) |
 |
|
|
|
|
10 | |
|
|
|
|
