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.


What is the Color of the Lunar Seas?

November 14, 2022

MarioFreitas-may15-2016-P1110556 (1)

Photographer: Mario Freitas

Summary Author: Mario Freitas

The above photo showing the waxing gibbous Moon was taken on a
sunshiny afternoon near Curitiba, Brazil. Bright areas of the lunar
crust correspond to highlands, while the darker ones are basaltic
plains, named by early astronomers as “ maria”, the Latin word for
seas.

As we can see in the photo, in full daylight the basalt seas display a
hue of blue that’s due to Earth’s atmosphere, being just a little
brighter than the portion of the Moon that’s not illuminated by the
Sun. Lunar highlands are bright enough to appear whitish on photos.
This subtle contrast increases when the Moon is observed in a
nighttime sky.

The annotated image below gives the names of some famous lunar
craters and maria, among them the Sea of Tranquility, the first
location on another world visited by human beings. Photo taken on May
15, 2016,

Photo details: Panasonic LUMIX FZ-70 camera; focal length 215 mm.

MarioFreitas-may15-2016-P1110556-names (1)

Curitiba, Brazil Coordinates: -25.4372, -49.2700


Related EPODs

What is the Color of the Lunar Seas? Wafer Thin Moon and
Pumpkin Sky Paraselene, Antares and Supermoon Witches Broom in
Cygnus Observing Six Major Annual Meteor Showers Loana Valley
of Italy at Night
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 37 weeks, 21 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.


Dew Drops

October 14, 2022


IMG_8940

IMG_8941

Photographer: Marco Meniero

Summary Author: Marco Meniero

When my mother asked me to photograph the roses in her garden with my
iPhone11 Pro, I happened to notice these beautiful dew drops. The
temperature at which the air is saturated with vapor is called the
dewpoint. When the surface temperature falls to the dewpoint, the
water vapor contained in the atmosphere condenses to form drops
(dew drops) on leaves and other surfaces. This process distinguishes
dew from precipitation that forms directly in the air – raindrops.
Photos taken on October 10, 2022.


Civitavecchia, Rome, Italy Coordinates: 42.0924, 11.7954


Related EPODs

Dew Drops Golden Cumulus Clouds over Mt Makiling at Sunrise
Thunderstorm and Rainbow over Zagreb, Croatia Etna Volcano at
Night Crepuscular Rays Observed from Turin, Italy Sylvanshine
More...

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 32 weeks, 4 days, 20 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.


Evaporation Fog in Meuse Valley

December 14, 2022

Sept-meuses-brouillard-pano (1)

Photographer: Thierry Lombry
Summary Author: Thierry Lombry

The photo above shows a foggy morning in the Meuse Valley at as
seen from the Sept Meuses viewpoint, Rivière, Belgium. Such fog is
common in the Meuse Valley from October to January. This is referred to
as a radiation, evaporation, or valley fog. It’s likely that clear
skies during the overnight period here permitted the ground to cool to
the dew point temperature, resulting in a net heat loss and the
formation of fog. The densest fog formed in the valley bottom, where
the lowest temperatures were reached. Photo taken on November 13, 2022.
Photo details: Canon Powershot S120 camera; panoramic image composed of
8 separate pictures, generated with Hugin, a freeware; high quality CCD
and image processing software.

Rivière (lieu-dit les Sept Meuses), Belgium Coordinates: 50.3566,
4.8745


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Evaporation Fog in Meuse Valley Cumulus Clouds with Spikes
Mamattus Observed in Stratus Cloud Roll and Lenticular Clouds
Above Taiwan Moonlit Monte Viso Cumulonimbus Montage Above
Taipei, Taiwan
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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 41 weeks, 2 days, 21 minutes
* Origin: -=> Castle Rock BBS <=- Now Husky HPT Powered! (21:1/186)