• ES Picture of the Day 18 2022

    From Black Panther@21:1/186 to All on Tue Jan 18 11:01:08 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Waning Crescent Moon Fades into the Sky

    January 18, 2022

    20210712moon

    Photographer: Meiying Lee

    Summary Author: Meiying Lee

    This picture montage of the Moon against a vibrant sky was taken
    near Taipei, Taiwan in July 2021. As the sky gets brighter, the
    waning Moon with the age of 28.5 days gradually becomes the same
    color as the sky and disappears. The moon’s apparent brightness
    fluctuates significantly over its approximately 29.5-day synodic
    month. Because these photos were taken within hours of the New
    Moon, the Moon’s faint brightness enabled its graceful receding into
    the background. The changes of the sky are as beautiful and changeable
    as pressed powder.
    * Taipei, Taiwan Coordinates: 25.0330, 121.5654

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    Night Sky Links

    * Space Weather Live
    * Space Weather Live Forum
    * About the Moon
    * American Meteor Society
    * Arbeitskreises Meteore e.V.
    * Global City Lights
    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
    * NASA Eclipse Web Page
    * Understanding The Moon Phases

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 6 weeks, 2 days, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Fri Feb 18 11:01:06 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Clouds In a Fiery Sunset

    February 18, 2022

    DSC_0090m ep

    Photographer: Teresa Molinaro

    Summary Authors: Teresa Molinaro; Cadan Cummings

    Sunrise and sunset are beautiful times of the day to photograph the
    gradually changing colors and clouds of our sky. This is embodied
    by the photo above from the province of Palermo, Sicily on the evening
    of July 4, 2021, when the clouds appeared to be set ablaze in a fiery
    red hue. At around 9pm local time, the sky was suddenly tinged with
    color that quickly changed from orange to red. The reason the sky at
    sunrise and sunset is so vibrantly colored is due to light
    scattering. As light passes through the atmosphere, its direction
    changes when it interacts with gases and small molecules on the way to
    our eyes. Longer wavelengths of light (red and orange) are not as
    affected by scatter as shorter wavelength (blue and violet) light. When
    the Sun angle is low on the horizon, the sunlight must pass through
    comparably more atmosphere, which causes increased scattering of blue
    and violet spectra. At sunset and sunrise, this unequal scattering is
    why we see mainly red, orange, and yellow light on the horizon.

    Photo details: Nikon D3400, 70 mm lens, 1/5 second exposure, f/4.5,
    ISO-800,
    * Bagheria, Sicily, Italy Coordinates: 38.083, 13.500

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    Sun Links

    * NASA Solar Dynamics Observatory
    * NASA Solar Eclipse Page
    * NOAA Solar Calculator
    * The Sun-Earth Connection: Heliophysics
    * The Sunspot Cycle
    * Solar System Exploration: The Sun
    * The Sun Now
    * This Week’s Sky

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 10 weeks, 5 days, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Fri Mar 18 12:00:50 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Three-Dimensional Moon

    March 18, 2022

    Inbound8360455531910057402 Photographer: Francesco Dalla Stella

    Summary Author: Francesco Dalla Stella

    This photo composite shows my first attempt to create a
    three-dimensional image of the Moon with both sides visible. To
    create this image, I merged a picture of the Full Moon taken on
    November 19, 2021, with another photo taken during the Waxing
    Gibbous Moon on the night of December 13, 2021. Each Full Moon of the
    year is uniquely named, and the one each November is called the
    Beaver Moon. The distinctive name was given because November is the
    time of year beavers usually store up energy and take shelter.
    * Montecchio Maggiore, Veneto, Italy Coordinates: 45.5003, 11.4213

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    Night Sky Links

    * Space Weather Live
    * Space Weather Live Forum
    * About the Moon
    * American Meteor Society
    * Arbeitskreises Meteore e.V.
    * Global City Lights
    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
    * NASA Eclipse Web Page
    * Understanding The Moon Phases

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 2 weeks, 4 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Mon Apr 18 12:01:12 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Low Rainbow Between Mountains

    April 18, 2022

    IMG_3857a

    Photographer: Meiying Lee

    Summary Author: Meiying Lee

    Shown in the photo above is the closest and widest rainbow I have
    ever encountered. It appears that you can reach the end of the rainbow
    by just walking. At 1:39 pm local time on December 13th, I passed
    through the saddle between two mountains going away from the cloud
    and rain area. The Sun suddenly appeared, and I immediately looked back
    and saw this very low rainbow was in front of me! At that time, the
    Sun angle was about 35 degrees, and the center of the rainbow-
    located at the antisolar point- was about 35 degrees below the
    horizon. This means the elevation angle of the 42 degree rainbow on
    the horizon was only about 7 degrees!

    Photo details: iPhone 13 Pro, 2 mm focal length, f/1.8, 1/1876 second
    exposure, ISO-32
    * Taichung, Taiwan Coordinates: 24.1477, 120.6736

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    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 7 weeks, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Wed May 18 12:00:30 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Solar Halo and Sundog over Camelot

    May 18, 2022

    Solar halo over Camelot

    Photographer: Daniele Cipollina

    Summary Authors: Daniele Cipollina; Cadan Cummings

    This stunning photo features a solar halo along with two
    sundogs visible in the sky near Arquata Scrivia, Italy. Both
    sundogs and solar halos are produced by ice crystals suspended in
    the atmosphere. The difference between the two optical phenomena is
    caused by variations in ice crystals orientation. If the ice is
    oriented horizontally to the viewer, a sundog is visible. Conversely,
    where the ice crystals are randomly oriented, a solar halo is visible.
    According to legend, the hill in the foreground of the photo was where
    King Arthur's castle was built. Photo taken on August 12, 2015, at
    20:41 GMT.

    Photo details:; Nikon Coolpix P7100; focal length 6 mm (35 mm
    equivalent to 28 mm): ISO 100; f/6.3, 1/1600 second exposure
    * Arquata Scrivia, Italy Coordinates: 44.681, 8.900

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    Atmospheric Effects Links

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    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 11 weeks, 2 days, 20 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sat Jun 18 12:01:04 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Timpa Nature Reserve of Acireale

    June 17, 2022

    2022 02 Timpa_2

    Photographer: Vincenzo Russo

    Summary Author: Vincenzo Russo

    The photo above shows the southern part of the “Timpa” of Acireale,
    Italy located on the east coast of Sicily. The Timpa consists of a
    steep cliff overlooking the sea that rises around 500 feet (150 meters)
    and extends for about 3.7 miles or 6 kilometers. It originated from the
    movement of the Acireale fault, one of the most important in the
    eastern region of the Etna volcano. Fault activity started about
    200,000 years ago and lasted for about 100,000 years, which brought out
    numerous layers of volcanic rocks that tell the geological history of
    Etna. The terrain ruggedness makes the area almost inaccessible by
    land. This tough topography has enabled the landscape to remain an
    island of unspoiled nature, despite being located within a highly
    urbanized region. For this reason, it was locally proclaimed a
    nature reserve in 1999. Photo taken on February 6, 2022.

    Photo details: Nikon D810a, Nikon 24-120 mm f/4G, focal length: 30mm,
    f/11, ISO-12800, 1/100 second exposure
    * Acireale, Italy Coordinates: 37.612,15.173

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    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * MyShake - University of California, Berkeley
    * USGS Ask a Geologist
    * USGS/NPS Geologic Glossary
    * USGS Volcano Hazards Program

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 15 weeks, 5 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Mon Jul 18 12:01:00 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Supernova SN2022hrs

    July 18, 2022

    Sn2022hrs_Forums

    Photographer: Greg Parker

    Summary Author: Greg Parker

    Shown above is supernova SN2022hrs taken with my Hyperstar4 on
    the night of April 21-22, 2022, at the New Forest Observatory in
    southern England. Clear, moonless nights in England are quite rare, so
    it was a treat to not only have such a transparent night but to be able
    to observe a supernova to boot. This supernova was discovered by Koichi
    Itagi on April 16, 2022, just a week before I was able to observe it.

    SN2022hrs is found in the spiral galaxy NGC4647, some 63 million
    light years away. It's almost overshadowed here by the massive
    elliptical galaxy, M60 to its lower left. M60 and NGC4647 are part of
    the Virgo supercluster of galaxies and lie close to the well-known
    grouping called Markarian's Chain.

    Photo details: Imaged with an ASI 2600MC-Pro colour CMOS camera (26
    Megapixels!!) on a Hyperstar 4 lens connected to a wedge-mounted
    Celestron C11 GPS Schmidt-Cassegrain reflector. The image is only 16 x
    3-minute subs (exposures). It was captured from 23:00 (local time) on
    the night of the 21^st until 00:40 (local time) on the morning of the
    22nd.
    * New Forest Observatory, U.K Coordinates: 50.819444, -1.59

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    Night Sky Links

    * Space Weather Live
    * Space Weather Live Forum
    * About the Moon
    * American Meteor Society
    * Arbeitskreises Meteore e.V.
    * Global City Lights
    * Heavens Above Home Page
    * The International Meteor Organization
    * Lunar and Planetary Institute
    * MoonConnection
    * NASA Eclipse Web Page
    * Understanding The Moon Phases

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 20 weeks, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Thu Aug 18 12:00:34 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Pollen and Flying Seeds

    August 18, 2022


    #01 (7)

    Photographer: Paolo Bardelli
    Summary Author: Paolo Bardelli

    Even if we don't realize it, during springtime the sky is crossed by
    large quantities of flying seeds and pollen. The photo at top is a
    sum of 30 shots showing the presence of many such seeds as observed
    from Albusciago, Italy, on April 14, 2020. In addition, the
    proliferation of pollen grains, though practically invisible, can
    produce the spectacle seen on the bottom photo – a corona about the
    Sun.

    Mid-April was quite clear in Albusciago, due to foehn winds
    (strong, warm and dry winds), while at the same time birch trees were
    blooming. The very low relative humidity (measured at 12% at my weather
    station) caused the release of large quantities of pollen into the air.
    It was thus possible to detect a "pollen corona," created by the
    diffraction of sunlight by the minute, elliptically shaped pollen
    grains.

    Though springtime can be difficult for people like me who suffer
    with allergies, being able to observe this pollen corona offered some
    consolation. Note, always use extreme caution when looking anywhere
    near the Sun. Here, I used the top of a chimney to block the Sun and
    made sure not to look through the viewfinder.

    Photo details: Canon 70D, zoom lens 17/85 mm. with polarizing filter.
    Processing: PS CC, Startrails.


    Albusciago, Italy Coordinates: 45.7395, 8.7939


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    Atmospheric Effects Links

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    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 24 weeks, 3 days, 20 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sun Sep 18 12:00:58 2022
    EPOD - a service of USRA

    The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
    captions and links exemplifying features within the Earth system. The
    community is invited to contribute digital imagery, short captions and
    relevant links.


    Sylvanshine

    September 16, 2022


    SylvanshineWeb

    Photographer: Marco Meniero

    Summary Author: Marco Meniero

    I finally managed to photograph an optical phenomenon that’s eluded me
    for years, namely the sylvanshine, a faint reflection of light
    produced by micro-drops of water on the leaves of trees. See slighter
    brighter patches adjacent to the arrows on the above photo.
    Essentially, dew drops on waxy leaves reflects beams of
    sunlight back toward the observer -- a type of backscatter
    mechanism.

    The phenomenon was explained in 1994 by Professor Alistair Fraser,
    an expert in meteorological optics. According to his analysis, the wax
    on the leaves causes the water to form beads, which in effect become
    micro-lenses, focusing the light to a spot on the leaf's surface.
    The image at this spot is then directed in the opposite direction. This
    effect can even make certain trees appear snow-covered on moonlit
    summer nights. Photo taken from Viterbo Airport, on September 6, 2022,
    at 09:38 a.m. local time.

    Photo details: Nikon Z9 camera; Nikon S 14-24 lens; 2.8; 32 ISO; f /
    3.2; 1/160 second exposure.


    Viterbo Airport, Italy Coordinates: 42.436111, 12.061667


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    Atmospheric Effects Links

    * Atmospheric Optics
    * Optic Picture of Day: Gruppo Astrofili Galileo Galilei
    * Color and Light in Nature
    * The Colors of Twillight and Sunset
    * Refraction Index
    * Image Gallery: Atmospheric Effects
    * What is a Rainbow?

    -
    Earth Science Picture of the Day is a service of the Universities
    Space Research Association.

    https://epod.usra.edu

    --- up 28 weeks, 6 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)