• ES Picture of the Day 02 2022

    From Black Panther@21:1/186 to All on Sun Jan 2 11:00:58 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.


    Archive - Fireworks, Moonlight and Streaking Stars

    December 31, 2021

    6a0105371bb32c970b01bb07d35f34970d

    Happy New Year! Every weekend we present a notable item from our
    archives.

    This EPOD was originally published January 11, 2015.

    Photographer: Miguel Claro

    Summary Author: Miguel Claro
    Shown above is a 360 degree, all sky, long exposure view of the
    area around Almada, Portugal, captured from the top of a high-rise
    building late on New Year's Eve 2014 and early on New Year's Day
    2015. Fireworks celebrating the arrival of the New Year can be seen
    erupting from various locations around the horizon, including
    Lisbon (at bottom between the 6:00 and 7:00 position) and
    Sexial (at right at the 3:30 position). The waxing gibbous Moon
    is the elongated white blob at left center. Above the Moon, at
    center, are the stars of Orion. Jupiter is the bright streak at
    far right, near the TV antenna.

    Photo details: Canon 6D camera; f/6.3; ISO 800; 10 second exposure;
    8mm; Canon L circular fisheye lens. Taken on December 31, 2014 and
    January 1, 2015 between 22:42 and 00:10 -- a sum of 474 images with a
    total time integration of 1 hour and 20 minutes.

    * Almada, Portugal Coordinates: 38.6803, -9.1583

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    Night Sky Links

    * Space Weather Live
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    * About the Moon
    * American Meteor Society
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    * 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 4 weeks, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Wed Feb 2 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.


    The Stars in Cygnus

    February 02, 2022

    GregParker_stars like sand

    Photographer: Greg Parker

    Summary Author: Greg Parker

    Without looking at the title you might imagine that what’s being shown
    here are embedded specks of quartz on the surface of a sandstone
    rock, rather than a view of a particularly dense portion of the
    Milky Way. The camera is pointing toward the constellation of
    Cygnus the Swan. In this small part of the sky, there’s likely more
    than 150,000 stars, according to the Registar program. Amazingly,
    all the grains of sand on the world’s beaches pales in comparison
    to the number of stars estimated to exist in the entire universe.
    Compare this image with the Earth Science Picture of the Day for
    February 26, 2014. Photo taken on November 20, 2021.

    Photo details: Taken with a Canon 200 mm prime lens and a Starlight
    Xpress M26C, one shot color CCD.
    * Brockenhurst, Hampshire (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 8 weeks, 3 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 Wed Mar 2 11:00:28 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.


    California Nebula (NGC 1499)

    March 02, 2022

    Cali2

    Photographer: Greg Parker

    Summary Authors: Greg Parker; Cadan Cummings

    The photo above shows the California nebula (NGC 1499) located in
    the constellation Perseus. As its name implies, the shape of
    California nebula roughly resembles the U.S. state. The
    emission nebula is approximately 1,000 to 1,500 light years from
    Earth. Visible below NGC 1499 is the star Xi Persei, which ionizes
    the nebula's hydrogen atoms and gives the feature its iconic glow.

    Photo Details: I processed this image from Deep Sky Survey (DSS2) data
    which is available online. Image was processed from red and blue data
    channels with a synthesized green channel. Noel Carboni's Astronomy
    Actions automate this process in Photoshop.

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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 days, 20 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sat Apr 2 12:01:16 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.


    Archive - Mud Cracks near Trona, California

    April 02, 2022

    https://epod.usra.edu/.a/6a0105371bb32c970b0148c690473a970c-pi

    Every weekend we present a notable item from our archives.

    This EPOD was originally published on December 13, 2010.

    Photographer: Stan Celestian
    Summary Author: Stan Celestian

    Mud cracks are ephemeral sedimentary features found not
    just in dry lands but also in a variety of locations and climates. The
    cracks featured above were found in a desert wash near Trona,
    California. A rare rain event had flooded the area forming pools of
    sediment-laden water. As the sediment settled, the heavier
    coarse-grained particles collected on the bottom first, followed by
    finer and finer grained sediments. The last to accumulate was the
    finest clay particles. After the pooled water evaporated, the
    sediments began to dry out. The surface clay contained the most water
    and shrank the most as it dried, resulting in the upward curl of the
    mud cracks. Note the coarser, deeper material between the cracks. Photo
    taken on October 12, 2010.

    Photo details: Camera Maker: NIKON CORPORATION; Camera Model: NIKON
    D200; Focal Length: 55mm (35mm equivalent: 82mm); Aperture: f/9.0;
    Exposure Time: 0.0031 s (1/320); ISO equiv: 100; Exposure Bias: none;
    Metering Mode: Center Weight; Exposure: program (Auto); White Balance:
    Manual; Light Source: Fine Weather; Flash Fired: No.
    * The Pinnacles near Trona, California Coordinates: 35.617134,
    -117.368360

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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 4 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 May 2 12:01:18 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.


    Melting Frost on a Windshield

    May 02, 2022

    Water drops and frost
    Photographer: Glenn McCreery

    Summary Author: Glenn McCreery

    The photo above shows frost that formed on the outside of my car's
    windshield following a very cold night and warming morning air
    temperature. Frost builds on surfaces when its temperature is lower
    than freezing and moisture (humidity) is in the air at or above
    freezing temperature. The vapor sublimates directly to form the
    solid ice crystals of frost without going through the liquid phase,
    but these crystals do not necessarily have the six-sided symmetry of
    three-dimensional snow crystals. Adhesive forces between the
    sublimating ice crystals and microscopic surface irregularities help
    dictate the more irregular two-dimensional frost geometry.
    When the frost crystals melt, the resultant liquid drops tend to form
    shapes that minimize the energy of the drops. The resultant surface
    tension cohesive forces between water molecules, and adhesive
    forces between water and the surface and ice crystals, pull the drops
    into more hemispherical shapes. This melting process may be seen on
    the left side of the photograph. Melting first occurred on the left
    side of the windshield because the glass is curved, and the Sun was
    shining from this side. Photo taken on November 21, 2020.

    Photo details: Olympus TG 4, 25mm (35mm equivalent), f/2.8, 1/80 second
    exposure, ISO-100.
    * Idaho Falls, Idaho Coordinates: 43.493, -112.040

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    Cryosphere Links

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    * Snow and Ice Crystals

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

    https://epod.usra.edu

    --- up 9 weeks, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Thu Jun 2 12:00:42 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.


    Snowflakes on Mount Etna

    June 02, 2022

    Epod-cinzia-fioccodineve

    Photographer: Cinzia Lo Certo

    Summary Authors: Cinzia Lo Certo; Cadan Cummings

    The photo above was taken during a cold winter morning on Mount
    Etna near Nicolosi, Italy. At an elevation of around 3,280 feet (1,000
    meters) above sea level, this region on Etna sometimes experiences
    weather conditions that can produce snow. These snowflakes form
    when a water droplet condenses and freezes around a small particle in
    our atmosphere, such as dust or pollen. As a water droplet freezes,
    ice crystals slowly begin growing. Throughout the process, ice
    crystals continue to grow as they encounter ever-changing conditions in
    our atmosphere with different humidity and temperature. These
    tiny fluctuations favor or inhibit the formation of different ice
    crystal structures. The two basic processes in which crystals develop
    are through 'facets / flat faces' or 'branches'. Often these two
    processes alternate back and forth during snowflake creation, however,
    they can also happen simultaneously. In the case of the snowflakes
    above, they are in the plate formation zone with a temperature
    between 26°F to 32°F (-3°C to 0°C).
    * Nicolosi, Mount Etna Coordinates: 37.6175, 15.0241

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    * Snow and Ice Crystals

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

    https://epod.usra.edu

    --- up 13 weeks, 3 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sat Jul 2 12:01:02 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.


    Culburra Beach Sand Layers Following Wildfires

    July 02, 2022


    Ash in Sand 2

    Photographer: John Lupton
    Summary Author: John Lupton

    The photo above was taken two and a half years after major
    wildfires on the east coast of Australia (late 2019 through to
    early 2020) burned approximately 65,600 sq. miles (70,000 sq. km.).
    It’s estimated that over a billion mammals, reptiles and birds were
    killed. The south coast of New South Wales and eastern coast of
    Victoria were particularly hit hard. During that time, rivers in the
    region had a floating layer of blackened leaves and ash that washed
    down to the sea. From personal experience, it was nigh impossible to
    swim or see the bottom in normally crystal-clear waters.

    The Shoalhaven River flushed down significant sums of ash to the
    sea. On the photo, captured at Culburra Beach in New South Wales,
    note the clear line of ash deposit, between sand layers, that were laid
    down during this wildfire episode. Erosion, because of the denuded
    landscape and also from extreme surf conditions as a result of an
    east coast low pressure systems, removed over 80% of the beach’s
    sand, exposing these layers. The upper layer relates to the 2019~2020
    wildfire, while the lower relates to a lesser fire season in February
    2017. These sand cliffs, though revealing very recent wildfire history
    nonetheless demonstrate the impact of the fires on the local
    environment and are a pointer to their lasting impact for years to
    come. Photo taken on April 4, 2022.
    * Culburra Beach, New South Wales, Australia Coordinates: -34.9305,
    150.7580

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    Geology Links

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

    https://epod.usra.edu

    --- up 17 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 Tue Aug 2 12:01:26 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.


    Lightning and the Eiffel Tower

    August 02, 2022


    6M2A7587p

    Photographer: Bertrand Kulik

    Summary Author: Bertrand Kulik; Jim Foster

    The photo above showing a forked lightning stroke near the
    Eiffel Tower in Paris, France, was captured during a
    thunderstorm on May 15, 2022. From the balcony of my apartment
    window (in District 15), this cloud-to-ground bolt appeared to be a
    much-distorted outline of the famed tower itself. At 916 ft (279 m) in
    height and hundreds of feet higher than any nearby structure, the
    Eiffel Tower is not only the visual focal point of Paris but is one of
    the most eye-catching objects of any city anywhere in the world. On
    average, it's the target of lightning strikes about 10-times per
    year.

    Photo details: Canon EOS 5D Mark III camera; EF 50 mm; f/1.8 STM;
    ƒ/13.0; 50.0 mm; 2 50.


    Paris, France Coordinates: 48.856614, 2.352222


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

    https://epod.usra.edu

    --- up 22 weeks, 1 day, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Fri Sep 2 12:00:56 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.


    Mount Etna Eruption of May 29, 2022

    September 02, 2022

    Gianni TUMINO Colata 01_06_2022_Riposto_JPG_LOGO_2040pix

    Gianni TUMINO Colata 02_06_2022_MILO_JPG_LOGO_2040PIX

    Photographer: Giovanni Tumino

    Summary Author: Giovanni Tumino

    During one of the numerous paroxysms of Mt Etna (Sicily, Italy), I
    decided to spend the night filming the lava flow it generated. This
    flow emanated from a new eruptive mouth that opened at
    approximately the 2,800 m (9,186 ft) level on May 29, 2022. Though
    these flows look ominous, fortunately the Bove Valley acts as a
    container for the lava flow that would otherwise pour over the Etnean
    towns. Photos taken on June 2, 2022.

    Riposto, Sicily, Italy Coordinates: 37.73140, 15.20916

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

    https://epod.usra.edu

    --- up 26 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 Sun Oct 2 12:01:22 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.


    Basket Stinkhorn

    September 30, 2022

    Stinghorn

    Photographer: Mila Zinkova
    Summary Author: Mila Zinkova

    Shown above is the Basket Stinkhorn, Clathrus ruber, that I came
    upon during a walk in the woods not far from San Francisco, California.
    Its odor is repugnant to you and I but is evidently like catnip to
    flies. " They flock to her foetid scent, feed upon the
    spore-impregnated greenish-black gleba, and soar off, spreading
    stinkhorn spores in their wake."

    Most often found in temperate deciduous forests, Clathrus ruber
    hatches from an egg-like film. At the base of which is a mycelial
    “root,” that at this stage has little scent and might be edible to
    some. However, it doesn’t take long before its stench is so
    overpowering that only a creature like a fly could be attracted to it.
    Click here to see a video from hatching to decaying.



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

    https://epod.usra.edu

    --- up 30 weeks, 6 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Wed Nov 2 12:01:08 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.


    Wafer Thin Moon and Pumpkin Sky

    October 31, 2022


    MatthewC_DSC_1834s2s

    THANKS FOR VISITING EPOD. THE BLOG SERVICE IS HAVING A TECHNICAL ISSUE.
    WE HOPE TO RESOLVE THIS WITH OUR SERVICE PROVIDER SOON.

    Photographer: Matthew Chin
    Summary Author: Matthew Chin; Jim Foster
    Can you spot the sliver of the crescent Moon? Because it was only about
    1.3% illuminated when this photo was snapped, at dawn on June 28, 2022,
    it isn’t exactly conspicuous against the pumpkin-colored sky. As night
    has now lost its grip, hordes of bats are returning to their caves
    (could this be the source of the dark smudge at lower right?) and other
    spooky, nocturnal creatures will soon be asleep in their lairs. Photo
    taken in Yuen Long, Hong Kong, on June 28, 2022, at 05:12 a.m. local
    time.

    Yuen Long, Hong Kong Coordinates: 22.4445, 114.0222


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    * The International Meteor Organization
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    * 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 35 weeks, 2 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Fri Dec 2 11:01:12 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.


    Cumulus Clouds with Spikes

    December 02, 2022


    IMG_0290

    IMG_3739

    Photographer: Mila Zinkova

    Summary Author: Mila Zinkova; Jim Foster

    Shown above are curious shaped, cumulus clouds that were observed
    from near my home in San Francisco, California, on April 19, 2022. The
    spike-like features have horseshoe shapes in some cases, as shown in
    the bottom photo. Perhaps these spikes and horseshoes are caused by
    convection -- intense localized heating of the most optically
    thick portion of cloud by the strong April sun. However, because the
    atmospheric environment where the clouds formed wasn't suitable
    ( stable atmosphere) for widespread building, they remained overall
    fairly “flat” in appearance. Click here to see a video of these
    clouds.

    San Francisco, California Coordinates: 37.7749, -122.4194


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

    https://epod.usra.edu

    --- up 39 weeks, 4 days, 21 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)