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 Forato’s Natural Arch at Sunset

January 21, 2021

Mount Forato’s Natural Arch at Sunset

Photographer: Fabio Di Stefano
Summary Authors Fabio Di Stefano; Stu Witmer

Seen above, the Sun sets directly behind the natural arch of
Mount Forato in the Alpi Apuani UNESCO Global Geopark of Tuscany
(Italy). The arch is one of the largest in Italy and is known locally
as the Pania forata (perforated hill). It was probably formed by the
wind and water erosion of the carbonate rock. The Apuan
Alps originated in the Paleozoic Era (about 500 million years ago)
and are known for their combination of marble mountains and
karst caves. Sometimes it's possible to see planets or the
Moon through the arch. Photo taken November 10, 2020.

Photo Details: Camera: Canon EOS M6; Software: Adobe Photoshop
Lightroom Classic 9.4 (Windows); Exposure Time: 0.0031s (1/320);
Aperture: ƒ/7.1; ISO equivalent: 800; Focal Length: 200.0mm; Lens:
EF70-200mm f/4L USM
* Mount Forato, Italy Coordinates: 44.01506, 10.3354

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Mount Forato’s Natural Arch at Sunset The Stone Donkey
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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
* 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 5 weeks, 1 day, 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.


Spring Flowers on Mt. Kulis

April 21, 2021

Paul_Phil_inbound6404201052665763693
Photographer: Paul Anton D. Mahinay
Summary Author: Paul Anton D. Mahinay

This sunrise photo was captured atop Mt. Kulis (2,034 ft or 620
m above sea level) in Tanay, Rizal, Philippines, on February 25, 2021.
The northeast monsoon (prevailing wind during winter) had begun to
weaken, allowing warmer and sunnier weather to set in. As a result, the
yellow-orange cosmos flowers in the foreground were in bloom, their
coloration nearly matching the color of this sunrise.
Photo Details: Smart phone camera; f/1.7; 3.93 mm; ISO 40; taken at
6:57 a.m.
* Mt. Kulis, Philippines Coordinates: 14.6083, 121.3669

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Spring Flowers on Mt. Kulis Archive - The Continental Divide
Lake Ghirla, Italy Lofoten Islands, Norway Mesa Arch in
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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 1 week, 22 hours, 42 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.


The Relativistic Jet of M87

May 21, 2021


HSIII_M87_12subs_4mins_dither_2star_SDMask_DDP_Crop_Flat202020_MSS_
NoiseRed_LCE_Composite_Arrowed

Photographer: Greg Parker
Summary Author: Greg Parker
As it’s galaxy viewing season now (for stargazers with telescopes), I
thought I'd look for the relativistic jet coming out of galaxy
M87 in the Virgo Galaxy Cluster. M87, some 54 million light
years away, is the galaxy where a radio image of the supermassive
black hole that lies at its center was recently acquired. The
relativistic jet of high energy particles is the signature of this
black hole.

After imaging, when I did my normal processing procedure, the jet was
lost in the glare of M87 itself. So, I used a Digital Development
Filter to mask out the galaxy, and this allowed the jet to be seen
quite clearly. Photo taken on April 18, 2021.
Photo details; The image consists of 12 sub-exposures each of 4-minutes
taken on a Hyperstar III (f#2; Celestron C11 SCR telescope; Starlight
Xpress 814C one shot color CCD camera. The main frame is the whole
field of view of the Hyperstar III with M87 at the center of the frame.
The insert is a further processed view of just M87 in order to make the
jet clearer.

New Forest Observatory, Brockenhurst, Hampshire, U.K. Coordinates:
50.819700, -1.590349

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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, 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.


Mammatus Clouds over Colorado Springs, Colorado

June 21, 2021

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Photographer: Jessica Falk
Summary Authors: Jessica Falk; Jim Foster
These scary looking mammatus clouds accompanied severe storms
that marched across the Rocky Mountains and into Colorado Springs,
Colorado, on a summer’s day a few years back. Formed by downdrafts
pushing cool air toward the base of the storm, mammatus are rarely as
mean as they appear. Nonetheless, it’s comforting to have shelter close
by when clouds like these take shape. Photo taken on July 10, 2013.
* Woodland Park, Colorado Coordinates: 38.9939, -105.0569

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Severe Weather Links

* World Severe Weather Information Center
* Enhanced Fujita Scale
* A Lightning Primer
* More About Thunderstorms
* Staying Safe Outdoors in Severe Weather
* NOAA Storm Prediction Center
* Patterns of Lightning Activity
* US National Weather Service

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

https://epod.usra.edu

--- up 6 weeks, 3 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.


Strong Thunderstorm Over France

July 21, 2021

_DSF6351-1_TIFF_1_JPEG_reduced

Photographer: Donato Lioce

Summary Author: Donato Lioce & Cadan Cummings

This photo of a thunderstorm in France was created by stacking five
long exposure images taken over two minutes. While there was clear sky
above me, I noticed lightning nearby on the horizon. A majority of
this intense storm cell is intra-cloud and cloud-to-cloud
lightning, although occasional cloud-to-ground lightning is seen
striking the land surface. Intra-cloud lightning is the most frequent
form and is also called sheet lightning because of how it lights up
the sky. I find this image interesting because the intra-cloud
lightning gives the image a sense of explosion.

Related EPODs

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Overshooting Storm Top Archive - Satellite Snow Loop
More...

Severe Weather Links

* World Severe Weather Information Center
* Enhanced Fujita Scale
* A Lightning Primer
* More About Thunderstorms
* Staying Safe Outdoors in Severe Weather
* NOAA Storm Prediction Center
* Patterns of Lightning Activity
* US National Weather Service

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

https://epod.usra.edu

--- up 10 weeks, 5 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.


Four Seasons of Wisteria

September 21, 2021


Image0 (2)

Photographer: Marcella Botti

Summary Author: Marcella Botti

In September 2019, I noticed this beautiful wisteria in the
Park of Villa Finzi, Milan, Italy, and so for fun I photographed it
over and over again, noticing the change from one month to the next. I
managed to take the first two photos shown above (autumn and winter),
when I was working in Milan, then I changed jobs, then the pandemic
arrived. Intent on completing the project, I went back to Milan in
March 2021 to immortalize spring, and finally, in June 2021, I finally
completed by little swing through the seasons.
Wisteria, a genus in the legume family of flowering plants
( Fabaceae or Leguminosae), is a vigorous and cold hardy climbing
vine. Different species are found throughout the mid latitudes of the
Northern Hemisphere, including China, Korea, Japan, Southern Canada,
and the eastern United States. The woody vines of the wisteria climb by
twining their stems (notice the huge vine of this wisteria) around any
available support. All four photos featured above were taken between
9:00 a.m. and 9:30 a.m., local solar time, using my IPhone XR.


* Villa Finzi, Milan, Italy Coordinates: 45.5053, 9.2200

Related EPODs

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Plant Links

* Discover Life
* Tree Encyclopedia
* What are Phytoplankton?
* Encyclopedia of Life - What is a Plant?
* USDA Plants Database
* University of Texas Native Plant Database
* Plants in Motion
* What Tree is It?

-
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 hours, 55 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)