astroblogo

Spegnete le luci, e fate silenzio, l'Universo si sta mostrando

 

Alla ricerca dell'acqua perduta, venerdì deep impact sulla Luna

Quattro anni fa il Deep Impact,

Questa mattina, invece, alle 10.30 in diretta sulla TV (Internet) della NASA, ci sarà l'impatto sulla Luna, alla ricerca dell'acqua perduta (che tutti un giorno sogneranno di bere in lattina :-).  

Spaziato da: Aribandus a 19:38 | link | commenti |
luna, deep impact, nasa tv

Deep Impact: trovata acqua ghiacciata sulla cometa Tempel 1

Scientists on NASA's Deep Impact mission report the direct detection of solid water ice deposits on the surface of comet Tempel 1. This is the first time ice has been detected on the nucleus, or solid body, of a comet. Deep Impact slammed an impactor into Tempel 1 last year in a successful effort to learn more about the composition of comets. LINK >

L'immagine precedente (originale!) è stata elaborata con Photoshop:  Saturation (saturazione). In questo modo è aumentato il contrasto dei colori. Quello che prima era un lieve azzurro, è diventato blu evidenziando zone prima non percettibili.

Il passo successivo è stato semplicemente quello di selezionare le aree blu (Replace color), e di schiarirle fino a portarle al bianco. Questo dovrebbe/potrebbe essere il ghiaccio individuato dalla sonda.

 

Spaziato da: Aribandus a 12:35 | link | commenti |
deep impact

Comet Tempel's Silhouette

This false-color image shows comet Tempel 1 about 50 minutes after Deep Impact's probe smashed into its surface (back side of comet in this picture). The image was taken by the mission's flyby spacecraft as it turned back to face the comet for one last photo opportunity. The colors represent brightness, with white indicating the brightest materials and black showing the faintest materials. This brightness is a measure of reflected sunlight. The Sun is located to the right, out of the picture.

Because the sunlit portion of the comet is brighter, it appears white. The comet's nucleus is silhouetted against the light reflected from surrounding dust.

The large plume of dust that was kicked up upon impact can be seen as the colorful, drop-shaped object. This plume was very bright, indicating that the comet's surface material must be very fine, like talcum powder.

The blue speck in the upper left corner is a star.

This picture was taken by Deep Impact's high-resolution camera.

Image credit: NASA/JPL-Caltech/UMD

Spaziato da: Aribandus a 00:44 | link | commenti |
deep impact

L'esplosione sulla cometa TEMPEL 1 (nuove immagini)

This image shows the view from Deep Impact's flyby spacecraft as it turned back to look at comet Tempel 1. Fifty minutes earlier, the spacecraft's probe was run over by the comet. That collision kicked up plumes of ejected material, seen here streaming away from the back side of the comet. This image was taken by the flyby craft's high-resolution camera.

Image credit: NASA/JPL-Caltech/UMD

LA NUOVA ANIMAZIONE DELL'IMPATTO >>>

These pictures of comet Tempel 1 were taken by NASA's Hubble Space Telescope. They show the comet before and after it ran over NASA's Deep Impact probe.

Spaziato da: Aribandus a 11:03 | link | commenti (2) |
deep impact

Deep Impact/ POST IMPACT Briefing Diretta NASA TV

NASA TV

Spaziato da: Aribandus a 10:07 | link | commenti |
deep impact

4 Luglio 2005 Impatto con la cometa Tempel 1

Spaziato da: Aribandus a 09:28 | link | commenti |
deep impact

Deep Impact TimeLine

Segue TimeLine e animazione 4 Mb

Spaziato da: Aribandus a 19:43 | link | commenti |
deep impact