Epod - Earth Science Picture of the Day


© Teresa Molinaro 2020

Bonus Earth Science Photo of the Day - 11 Semptember 2021


Photographer: Teresa Molinaro


On the evening of May 13, 2021, I was ready to observe the conjunction between the Moon and Mercury. After several shots of the two objects clearly visible in the sky I was looking for something else, a terrestrial reference point that would allow me to take a different shot than usual. And so, moving along the seafront of Aspra, a well-known tourist resort in the province of Palermo (Sicily) and a place dear to me, I put myself in the right trajectory to immortalize the crescent moon growing with its ashy light and the elusive planet Mercury within a special frame: this is the travertine sculpture entitled “The Nativity”, by the local artist and writer Stefano Balistreri. The sculpture is dedicated by the artist to the victims of 11 September and is aimed at symbolizing universal peace. Note that the planet Venus is also visible, bright and low on the western horizon. You can also see the lights of the city of Palermo and the Utveggio Castle on the promontory of Monte Pellegrino.

Photo Details: Nikon D3400, 1/30S, f/5.6, ISO 800


Birds fly over iridiscent clouds

#epod 3 giugno 2021

Questa foto è stata scelta come foto del giorno della Scienza della Terra dall'autorevole sito di divulgazione scientifica Earth Science Picture of day, sponsorizzato dalla #NASA grazie all’EOS Project Science Office presso il Goddard Space Flight Center, e amministrato dalla Universities Space Research Association (USRA), che si occupa di selezionare e scegliere ogni giorno un' immagine che ritragga suggestivi fenomeni inerenti alle scienze della Terra.


Photographers: Teresa Molinaro ​


While hiking on the Ontario Ridge Trail in Pismo Beach, California, I observed the beautiful sunrise featured above. It had been stormy for two days before I snapped this picture, but since the rain had stopped overnight, I decided to take a little hike and was glad I did as I was rewarded with a stirring sunup. Photo taken on March 12,2021.

Bottom photo showing an iridescent sunset was captured from the terrace of my home in Bagheria, Italy, as mid-level clouds approached the Sun. Photo taken on February 5, 2021.


Bagheria, Sicily Italy Coordinates: 38.0789, 13.5124

Donec rutrum congue


Donec rutrum congue

Photographer: Teresa Molinaro 

Summary Authors: Teresa Molinaro; Jim Foster

During an excursion on the high Madonie, in Sicily (Italy), my eye was drawn to this weathered spiderweb, adorned with shimmering drops of dew. All that was required to show it off at its best was just a little more light, which was achieved by shooting in black and white and slightly increasing the ISO. Because beads of water have a tendency to gather at roughened spots on the web, at thread intersections for instance, this is where the larger dew drops are found. Photo taken on June 14, 2020.

Photo details: Nikon D3400 camera:105 mm; 1/250 second exposure; f/5.6; ISO 400.

Parco delle Madonie, Sicily, Italy Coordinates: 37.84861, 14.0497265

Photographer: Teresa Molinaro 


The photo above features a dramatic sunset on June 18, 2021 after a very hot summer day. Although I was at 3,117 ft (950 m) above sea level, immersed in the splendid Madonie Park, even here the heat was heavy and annoying. I was hoping to find refreshment in the green of nature and luckily around sunset the temperature began to be more bearable. I waited for the sunset because I anticipated the suspended Saharan dust would enhance the colors of the Sun, giving the sunset an African flavor. At around 8:30pm local time the Sun was preparing to go down behind the horizon, and it seemed that it was plunging into the houses of Polizzi Generosa in the heart of the Madonie. The spectacular colors of the sunset are due to the Saharan dust disproportionately scattering shorter wavelengths of light, thereby giving the sunset a reddish orange hue.


Photo Data: Nikon D3400 1/250s, F/8, iso 200, lens 450MM

Polizzi Generosa, Sicily, Italy Coordinates: 37.813,14.004


Photographer: Teresa Molinaro 


Bonus Earth Science Picture of the Day

Iridescence Creates a Nebula in the Lake

Photographer and Summary Author: Teresa Molinaro

When the sky is reflected in the water, bringing all its colors with it, the resulting spectacle is truly amazing. I was on an excursion in search of autumn landscapes to photograph near the shore of Lake Mandria del Conte, located inside the Madonie Park. Around noon, the sun began to play hide and seek with the clouds. As always, I had my camera in my hand and while I was intent on enjoying the landscape, I noticed that the lake was reflecting the magnificent iridescences that had been created around the Sun. A truly unmissable scene I had never seen before: a play of lights and colors that immediately brought to mind the image of a nebula!

When sunlight encounters the water drops of the altocumulus or altostratus, or the highest and thinnest clouds present in the atmosphere, it is diffracted. Therefore, phenomena are generated that are observable around the Sun or the Moon. If the water particles are all the same size, the crown takes shape, that is a circular rainbow around the Sun or the Moon, made of suggestive iridescences. If the water particles are instead irregular, the beautiful and always various iridescent clouds are generated.

Photo details: Nikon D3400, 1/1600 second exposure, f/29, ISO-200, 105mm lens

Visit today's Earth Science Picture of the Day at https://epod.usra.edu/


Immagine del giorno di Scienze della Terra Bonus

L'iridescenza crea una nebulosa nel lago

Fotografa e autrice riassuntiva: Teresa Molinaro

Quando il cielo si riflette nell'acqua, portando con sé tutti i suoi colori, lo spettacolo che ne deriva è davvero sorprendente. Ero in escursione alla ricerca di paesaggi autunnali da fotografare vicino alla riva del lago Mandria del Conte, situato all'interno del parco delle Madonie. Verso mezzogiorno, il sole cominciò a giocare a nascondino con le nuvole. Come sempre avevo la macchina fotografica in mano e mentre ero intento a godermi il paesaggio, notavo che il lago rifletteva le magnifiche iridescenze che si erano create intorno al Sole. Una scena davvero imperdibile che non avevo mai visto prima: una recita teatrale di luci e colori che mi ha subito fatto venire in mente l'immagine di una nebulosa!

Quando la luce del sole incontra le gocce d'acqua dell'altocumulo o dell'altostrato, o le nuvole più alte e sottili presenti nell'atmosfera, essa viene diffratta. Pertanto, si generano fenomeni che sono osservabili intorno al Sole o alla Luna. Se le particelle d'acqua sono tutte della stessa dimensione, prende forma la corona, cioè un arcobaleno circolare intorno al Sole o alla Luna, fatto di suggestive iridescenze. Se invece le particelle d'acqua sono irregolari, si generano le belle e sempre varie nuvole cangianti.

Dettagli foto: Nikon D3400, 1/1600 secondo esposizione, f/29, ISO-200, obiettivo 105mm

Visita l'immagine del giorno di oggi di Scienze della Terra su https://epod.usra.edu/

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