• ES Picture of the Day 13 2021

    From Black Panther@21:1/186 to All on Wed Jan 13 11:00:36 2021
    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.


    Lunar Meteorite NWA 7986

    January 13, 2021

    Luna f

    Photographer: Michela Meda
    Summary Author: Michela Meda

    Lunar meteorites, also called lunaites, are achondritic
    meteorites that originated from the Moon and fell on Earth as a
    result of a strong meteoritic impact on the lunar surface that was
    able to project rocky fragments into space. It’s a rather rare type
    of meteorite: the Meteoritical Bulletin Database lists 428 examples
    of this type as of November 2020. The largest lunar meteorite
    classified is Northwest Africa 12691 (NWA 12691), a single rock
    weighing 229 lbs (103.8 kg) found in January 2017 on the Western
    Sahara/Algeria border region. The fragment in the photograph is a small
    part of the original meteorite (43 oz/12.2 g). It’s a breccia of
    primarily feldspathic lithologies (feldspathic breccia). Petrography
    shows an abundant, partly devitrified, glassy matrix containing
    embedded small mineral and lithic clasts. Minerals included are
    olivine, orthopyroxene, pigeonite, augite,
    anorthite, ilmenite, troilite and minor kamacite. It
    was purchased from a Moroccan dealer at the Ensisheim Meteorite
    Show. Worldwide there are about 1,355 lbs (615 kg) of lunar meteorites
    and only a few of them are available on the market for
    collectors. Photo taken November 21, 2020.

    Related EPODs

    Lunar Meteorite NWA 7986 Refraction of Sound Waves Archive
    - Expansion Cracks Encore - Snell's Window Similarity Across
    Scales at the Extreme: Shapes of Pleurosigma and the Milky Way
    Archive - Visible and Near-Infrared Views of the Meuse River and
    Rochers de Néviaux
    More...

    Applied Sciences Links

    * BBC: World Water Crisis
    * Indoor Air Quality
    * Mathematics in Nature
    * A Mathematical Nature Walk
    * NASA: Applied Earth Sciences
    * Remote Sensing Tutorial

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

    https://epod.usra.edu

    --- up 4 weeks, 21 hours, 27 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sat Feb 13 11:00:34 2021
    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 - Frozen Breath

    February 13, 2021

    Isros06033

    Every weekend we present a notable item from our archives. This EPOD
    was originally published February 12, 2004.

    Provided and copyright by: Thomas Holmgren
    Summary authors & editors: Jim Foster; Thomas Holmgren

    If you breathe on a cold window, you can sometimes see the moisture
    freeze before your eyes, often forming shapes similar to snowflakes.
    These breath crystals are frozen directly from the air, forming the
    delicate leaves shown above, some of which are as long as 5 cm (2 in).
    To see breath crystals like these, the air temperature needs to be
    below about 14 F (-10 C).


    Related EPODs

    Archive - Frozen Breath Fascinating Ice Patterns Angle of
    Repose for Graupel Methane Bubbles Frozen in an Alaskan Marsh
    Dark Spots and Patterns on Lake Ice Surface Hoar Formation
    More...

    Cryosphere Links

    * Guide to Frost
    * What is the Cryosphere?
    * Bentley Snow Crystals
    * Glaciers of the World
    * Ice, Snow, and Glaciers: The Water Cycle
    * The National Snow and Ice Data Center Google Earth Images
    * Snow and Ice Crystals

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

    https://epod.usra.edu

    --- up 8 weeks, 3 days, 21 hours, 27 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Thu May 13 11:00:34 2021
    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.


    Belt of Venus and Earth’s Shadow Observed from Saint-Véran, France

    May 13, 2021


    _MGL4824 (1)

    Photographer: Jeff Graphy

    Summary Author: Jeff Graphy

    Featured above is a lovely moment capturing the rose-colored belt
    of Venus, the deep blue of the setting Earth’s shadow and the
    snowclad Pic de Rochebrune (10,890 ft or 3,320 m) in the
    Cottian Alps of France. The western sky as viewed from the
    Saint-Véran Observatory was simply stunning on this winter’s
    morning (January 11, 2021).

    Photo details: Canon 5D MKIII camera; Canon 80-200 lens; f/2.8.

    Saint-Véran , France Coordinates: 44.7008, -6.8686


    Related EPODs

    Belt of Venus and Earth’s Shadow Observed from Saint-Véran, France
    Omega Sun over South Padre Island, Texas Circular Rainbow
    Viewed from the Tower of Viterbo Airport, Italy 22 Degree Halo
    Observed from Melbourne, Florida Sunrise and Cloud Mirages Observed
    from Monte Tomba, Italy Views of Sahara Dust over the Canary
    Islands (Spain) and Paris, France
    More...

    Atmospheric Effects Links

    * Atmospheric Optics
    * 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 6 days, 12 hours, 15 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Sun Jun 13 11:00:30 2021
    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 - Red Rose and Morning Dew

    June 12, 2021

    6a0105371bb32c970b017d42b6cef9970c

    Happy Red Rose Day! Each weekend we present a notable item from our
    archives. This EPOD was originally published May 12, 2013.

    Photographer: Alejandro Jaramillo
    Summary Authors: Alejandro Jaramillo; Jim Foster
    The photo above showing a red rose draped in dewdrops was taken
    in Medellin, Colombia. When air at a constant atmospheric
    pressure is cooled below its dew point, typically in the early
    morning hours, moisture condenses not only on blades of grass and
    windshields but on all nearly all exposed surfaces. In fact, many
    plants, and even some animals, rely on dew and fog as a valuable
    source of water.
    The dipole charge on every water molecule attracts them to each
    other -- positive to negative and negative to positive. Water drops are
    more or less spherical because of this electrostatic attraction and
    cohesion. Photo taken on May 3, 2012.
    Photo details: SONY NEX-5N camera; 54 mm focal length; f/5 aperture;
    1/100 sec. exposure; ISO 200.
    * Medellin, Colombia Coordinates: 6.2457, -75.5822

    Related EPODs

    Archive - Red Rose and Morning Dew Northern Lights Above the
    Lofoten Islands of Norway Sunrise and Sunset Skies Strong
    Storms Over the Olympic Mountains Surprise on the Tyrrhenian Sea
    Belt of Venus and Earth’s Shadow Observed from Saint-Véran, France
    More...

    Atmospheric Effects Links

    * Atmospheric Optics
    * 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 5 weeks, 2 days, 12 hours, 15 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Tue Jul 13 11:00:34 2021
    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.


    Journey to the Center of the World

    July 13, 2021

    EPOD.CenterOfTheWorldYuma2021#5c

    EPOD.CenterOfTheWorldYumaTom2021#

    Photographer: Thomas McGuire

    Summary Author: Thomas McGuire

    In 1863 Jules Verne wrote, Journey to the Center of the Earth
    in which Professor Otto Lidenbrock and two companions repelled into
    Snæfellsjökull, a volcano in western Iceland. They found their way
    through many dangers, including a subterranean subpolar tornado to
    reach Earth’s center. The book inspired a 1959 full-length movie
    starring James Mason and Pat Boone.

    The Center of the Earth is not to be confused with the
    “ Official Center of the World” which is located in southeastern
    California, just west of Yuma, AZ. It was built by former US Marine
    and parachute entrepreneur Jacques-André at 32°45′01″N
    114°45′55″W. More than just whimsical, the centerpiece is an outdoor
    star-shaped arrangement of 8 double-sided rows of stone and similar
    structures containing hundreds of panels meticulously depicting and
    dedicated to human cultural heritage, diverse religious foundations and
    our planet’s natural history.

    A bronze rendering of Michelangelo's Arm of God serves as an
    accurate sundial (first picture) and points to a granite pyramid
    containing a plaque Jacques-André has designated as “The Center of the
    World” (second picture).

    Photo data: Canon EOS Rebel T7
    * Felicity, California Coordinates: 32.751683, -114.765531

    Related EPODs

    Journey to the Center of the World Archive - Washington, D.C.
    from Space Lake Tahoe: Blue Gem of the Sierra Nevada Gebel
    Kamil Meteorite and Kamil Impact Crater Geodiversity atop Utah’s
    Velvet Ridge Archive - Roof of the World
    More...

    Geography Links

    * Atlapedia Online
    * CountryReports
    * GPS Visualizer
    * Holt Rinehart Winston World Atlas
    * Mapping Our World
    * Perry-Castañeda Library Map Collection
    * Types of Land
    * World Mapper

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

    https://epod.usra.edu

    --- up 9 weeks, 4 days, 12 hours, 15 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Mon Sep 13 11:00:26 2021
    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.


    Erupting Villarica Volcano Under a Starry Sky

    September 13, 2021

    Rucapillan-and-the-southern-celestial-pole

    Photographer: Cari Letelier

    Summary Authors: Cari Letelier; Cadan Cummings

    The picture above features the erupting Villarrica volcano under a
    starry sky. Located in the Chilean Andes between the Los Ríos
    and Araucania regions, this 9,380 ft (2,860 m) tall volcano resides
    on the Mocha-Villarrica Fault Zone and is one of the most active
    stratovolcanoes in Chile. Villarrica is one of three
    stratovolcanoes in the region, with the other two volcanoes being
    the Quetrupillán and Lanín volcanoes. The landscape at the base
    of the volcano is a sacred location for the Mapuche people, who
    named this landform Rucapillán meaning “House of the Pillan” or
    “House of the Spirit”.

    Taken on January 5, 2021, this photo was perfectly timed to align the
    eruption plume with the celestial southern pole and the
    Magellanic Clouds. In the foreground, a chemamull wooden statue
    used by Mapuche for funeral rites watches over the volcano and the
    beautiful Milky Way.

    Photo Details: Nikon D850 and Nikkor 14-24 f2.8; 14mm f2.8 ISO4000 30″
    * Pucon, Aracania Region, Chile Coordinates: -39.4203, -71.9396

    Related EPODs

    Erupting Villarica Volcano Under a Starry Sky Little People of
    Blue Wonder Canyon Monument Rocks in Northwestern Kansas Star
    trails from Inside the Caldera at Nisyros Archive - Erta Ale,
    Ethiopia Archive - Ribeira da Janela, Portugal
    More...

    Geology Links

    * Earthquakes
    * Geologic Time
    * Geomagnetism
    * General Dictionary of Geology
    * Mineral and Locality Database
    * Mohs Scale of Mineral Hardness
    * This Dynamic Earth
    * USGS
    * 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 1 week, 3 days, 21 hours, 55 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Wed Oct 13 11:00:30 2021
    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.


    Noctilucent Clouds Over Northern Italy

    October 13, 2021

    #01

    Photographer: Paolo Bardelli

    Summary Author: Paolo Bardelli; Cadan Cummings

    The photo above shows a view of noctilucent clouds observed over
    Albusciago, Italy in June 2021. Noctilucent clouds, also referred
    to as night-shining clouds or NLCs, are the highest altitude clouds
    in Earth’s atmosphere (approximately 50 miles / 83 km) and are usually
    only visible in the 75 minutes to 2.5 hours before sunrise or after
    sunset. These unique clouds form when water vapor aggregates around
    specks of debris and meteorite dust in the mesosphere and
    freezes to form tiny ice crystals. NLC viewing mostly occurs for a few
    weeks around the summer solstice in each hemisphere and are confined to
    mid-to-higher latitudes. Historically, this region starts around 50
    degrees north or south latitudes and extends as far as the polar
    circles. However in recent years, possibly due to climate change, the
    noctilucent clouds have appeared further outside this typical area.
    This southern growth was evident on this evening in June when they
    literally filled the sky of northern Italy (45° N latitude), the
    largest ever apparition in our area. The next morning the clouds were
    moving north, still remaining clearly visible in the colors of dawn.
    * Albusciago, Italy Coordinates: 45.7395, 8.7939

    Related EPODs

    Noctilucent Clouds Over Northern Italy Lenticular Cloud Above
    Mount Aconcagua Parisian Mammatus Clouds Archive - Roque del
    Conde and Storm Clouds Bootleg Wildfire Pyrocumulus Cloud
    Midnight Drama
    More...

    Cloud Links

    * Atmospheric Optics
    * The Cloud Appreciation Society
    * Cloud Atlas
    * Color and Light in Nature

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

    https://epod.usra.edu

    --- up 5 weeks, 5 days, 21 hours, 55 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)
  • From Black Panther@21:1/186 to All on Mon Dec 13 11:00:28 2021
    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.


    Earthshine and Stary Sky

    December 13, 2021

    Earthshine Moon Venus And Antares Above Palazzolo Acreide - Unesco
    Site LD

    Photographer: Dario Giannobile

    Summary Author: Dario Giannobile

    This image shows a spectacular alignment of stars and the moon above
    the city of Palazzolo Acreide, Italy. The area is an UNESCO
    World Heritage Site known for its beautiful Sicilian Baroque
    churches of San Sebastiano and St. Paul. Almost all of Sicily
    was shrouded in clouds except for a small portion above Palazzolo
    Acreide. This was the perfect opportunity to photograph the
    crescent Moon, sometimes also called the sickle Moon, in alignment
    with Venus (on the lower left with respect to the Moon) and the
    star Dschubba of the Scorpius constellation (just above Venus).
    The photo also features the star Antares that appears in the upper
    left corner.

    Adding to the alignment of the stars, the peculiarity of the image lies
    in the splendor of the Moon. It appears to be illuminated by two
    distinct lights: one strong and bright and the other gentle and
    discreet. The first light - the one that illuminates the growing
    portion of the Moon - comes directly from the Sun and therefore is
    very intense to the point of dazzling its surface. The remaining part
    of the surface is illuminated in a blue-gray light by a phenomenon
    called Earthshine, which is light that reflects off the Earth
    toward the moon and is reflected back to us on Earth. Leonardo Da Vinci
    was the first person to recognize this phenomenon in the 1500’s. His
    understanding was that the Moon did not shine with its own light, but
    instead as a result of light from the Sun and to a lesser extent the
    Earth. Since then, this glow has also been called the Da Vinci
    glow. Photo taken October 9, 2021.
    * Palazzolo Acreide, Sicily, Italy Coordinates: 37.062, 14.904

    Related EPODs

    Earthshine and Stary Sky Full Moon illuminates Marmolada and
    Glacier Northern Lights over the Norwegian Sea Atacama Desert
    and Monje de La Pacana Meeting Between the Celestial Spheres In
    Sicily, Italy Altair
    More...

    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 1 week, 1 day, 20 hours, 43 minutes
    * Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)