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)

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)

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)

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)