Art Supplies

Monday, February 29, 2016

An Indonesian fisherman floating in an inner tube against the backdrop of Java's volcanos [1555x1037] [OC]


http://bit.ly/1L15CoE via /r/SkyPorn http://bit.ly/1OKKQV5

Grand Canyon under stormy weather [2000x1333] [OC]


http://bit.ly/1QI5INO via /r/EarthPorn http://bit.ly/1TNkDf4

Fire of the Heavens - Sandpoint, Idaho [OC] [6016 x 4016]


http://bit.ly/1OKagSL via /r/SkyPorn http://bit.ly/1T5nAsv

Julius Caesar and Leap Days


Today, February 29th, is a leap day - a relatively rare occurrence. In 46 BC, Julius Caesar, featured here in a self-decreed minted coin, created a calendar system that added one leap day every four years. Acting on advice by Alexandrian astronomer Sosigenes, Caesar did this to make up for the fact that the Earth's year is slightly more than 365 days. In modern terms, the time it takes for the Earth to circle the Sun is slightly more than the time it takes for the Earth to rotate 365 times (with respect to the Sun -- actually we now know this takes about 365.24219 rotations). So, if calendar years contained 365 days they would drift from the actual year by about 1 day every 4 years. Eventually July (named posthumously for Julius Caesar himself) would occur during the northern hemisphere winter! By adopting a leap year with an extra day every four years, the calendar year would drift much less. This Julian Calendar system was used until the year 1582 when Pope Gregory XIII provided further fine-tuning when he added that leap days should not occur in years ending in "00", unless divisible by 400. This Gregorian Calendar system is the one in common use today. via NASA http://go.nasa.gov/1T5mFIL

Wyoming Leap Day Sunset [1920 x 704]


http://bit.ly/1oUMI8Y via /r/SkyPorn http://bit.ly/1QiC84q

Redwoods at Muir Woods National Monument [1365x2048] [OC]


http://bit.ly/1TjhTrj via /r/EarthPorn http://bit.ly/1RCgNmM

Rays of Autumn by Ingmar Hoogerhoud [2000x1333]


http://bit.ly/1oUzV6J via /r/EarthPorn http://bit.ly/1RC9xrh

The Fire of the Heavens [OC] [6016 x 4016]


http://bit.ly/1OKagSL via /r/SkyPorn http://bit.ly/1QQRFfj

meow irl


http://bit.ly/1RC0BC9 via /r/MEOW_IRL http://bit.ly/1oUqZ1a

California meets the Pacific. [OC] [1800x2700]


http://bit.ly/1QHKhww via /r/SkyPorn http://bit.ly/1LrWJEl

I made a map of Mars! [OC] [2000x2667]


http://bit.ly/1L0fOgZ via /r/spaceporn http://bit.ly/1RBVVwe

meow irl


http://bit.ly/1QHFfjp via /r/MEOW_IRL http://bit.ly/1QHFdZ2

I moved from Indiana to Washington and took a photo of the first state park we passed in WA. Deception Falls [2448x3264]


http://bit.ly/1RgZ7up via /r/EarthPorn http://bit.ly/1oUfJBS

Up Up & Away, Big Bend National Park by Jesse Sewell js


via Just Space http://ift.tt/1QQATNi

Aurora in Iceland during the Solar Maximum [3840x2160]


http://ift.tt/1RgL5ca via /r/spaceporn http://ift.tt/1LR1XEP

15 Amazing Photos from Astronaut Scott Kelly's Year in Space [515 x 343]


http://ift.tt/1Qo4sDK via /r/spaceporn http://ift.tt/1QonypY

I climbed around the slot canyons inside Ubehebe Crater in Death Valley, CA recently. What a cool place. [oc][2048x1357]


http://ift.tt/21xcRfc via /r/EarthPorn http://ift.tt/1TipuGE

Spiral galaxy NGC 4911 in the Coma Cluster js


via Just Space http://ift.tt/1nddxUh

Washington State strikes again [6256x2518][OC]


http://ift.tt/1UuHDQG via /r/EarthPorn http://ift.tt/1Qh4HiG

The Lagoon Nebula in Hydrogen Sulfur and Oxygen : The...


via Just Space http://ift.tt/1LQK498

"His body was brown like rusty iron, and his hair hung over his face down to his knees." -- October Night Sky, San Isabel National Forest, Colorado [OC] [2000 x 1333]


http://ift.tt/1QnTw9o via /r/SkyPorn http://ift.tt/1VNrYdH

View from a plane at the peak of Mount Ruapehu, New Zealand [OC] [5312 x 2988] [Galaxy S5]


http://ift.tt/1pkdmYN via /r/SkyPorn http://ift.tt/1plPuUG

Land's End, Cornwall, UK [OC] [3264, 2448]


http://ift.tt/1TwsWuc via /r/EarthPorn http://ift.tt/1oJYD8U

Kathy's Sunrise taken from the first overlook on the Blue Ridge Parkway [OC] reduced to [1500x1000]


http://ift.tt/1oRC4zS via /r/SkyPorn http://ift.tt/1RB5prk

Meow Irl


http://ift.tt/1TN87xr via /r/MEOW_IRL http://ift.tt/1TN89oO

Canada never ceases to take my breath away. Lake Louise, Alberta. [OC][3622 x 2362]


http://ift.tt/1Qo2z6O via /r/EarthPorn http://ift.tt/1plcVxA

Beautiful scene in Mill Creek Park. Youngstown, Ohio. [6000 x 4000] [OC]


http://ift.tt/1TN2QpC via /r/EarthPorn http://ift.tt/1plBTwA

West Vancouver, British Columbia, Canada [1611 x 911]


http://ift.tt/1KZat9T via /r/SkyPorn http://ift.tt/1ncLtQM

Above Lofoten. Norway. [1600x1068] Photo by Daniel Kordan


http://ift.tt/1TMx77Y via /r/EarthPorn http://ift.tt/1OHRZ8x

Beautiful night sky over Jkulsrln, Iceland js


via Just Space http://ift.tt/1VNndke

Death Valley National Park superbloom [OC] [3629 × 2419]


http://ift.tt/24x32wW via /r/EarthPorn http://ift.tt/1QnXECI

Fimmvörðuháls. Iceland. June 2015. [2448x3264] [OC]


http://ift.tt/21E8ADl via /r/EarthPorn http://ift.tt/1oTpVdS

The Bear in Upper Antelope Canyon | Page, AZ | [OC] [4608x3456]


http://ift.tt/21EcTP0 via /r/EarthPorn http://ift.tt/1KZ1k0W

Images of Earth from a Year in Space (30 photos)


via The Atlantic Photo http://ift.tt/1oJNK78

Beautiful view from Mill Creek Park in Youngstown, Ohio. [6000 x 4000]


http://ift.tt/1RfRtAA via /r/EarthPorn http://ift.tt/1OIBHMv

NGC 520 - The product of a collision between two disc galaxies...


via Just Space http://ift.tt/21E3Tta

Meow irl


http://ift.tt/24wV8DD via /r/MEOW_IRL http://ift.tt/21E1Mpv

View from my "office" this morning. Bartlett, NH. [2048x1152] [OC]


http://ift.tt/1LqmIw1 via /r/EarthPorn http://ift.tt/1Qgg9LF

Rare Full Moon through Martinsloch, Switzerland [OC][5472x3648]


http://ift.tt/1RfpYXR via /r/EarthPorn http://ift.tt/1ThIRj5

Amazing Yosemite Firefalls from a n00b perspective [1365x2047]


http://ift.tt/1LqEKOS via /r/EarthPorn http://ift.tt/1XVFqxn

MEOW_IRL


http://ift.tt/1UuoYnV via /r/MEOW_IRL http://ift.tt/1UuoYnX

NASA's Search for Extreme Life in Chile's Mars-Like Atacama Desert


via The Daily Galaxy --Great Discoveries Channel: Sci, Space, Tech http://ift.tt/1OIaIAM

Milky Way's Enigmatic Central Zone --"No Place Else In the Galaxy Remotely Like It"


via The Daily Galaxy --Great Discoveries Channel: Sci, Space, Tech http://ift.tt/1OI8q4B

Arctic night skiing, with a cinematic view.. Just don't forget your rifle ;) [OC] [6016 x 4016]


http://ift.tt/1nbFfRg via /r/EarthPorn http://ift.tt/1Qga8hM

meow irl


http://ift.tt/21w2yrS via /r/MEOW_IRL http://ift.tt/21w2AQC

Taken somewhere in Ireland, 2014 [OC] [4576x2576]


http://ift.tt/1oJ7p76 via /r/EarthPorn http://ift.tt/1ThCpbN

Stars ripped the night sky [OC] [4928x3264]


http://ift.tt/24wUNkt via /r/SkyPorn http://ift.tt/1RA2K19

Morning over Pikes Peak, Colorado Springs, CO [OC] [5312x2988]


http://ift.tt/21DwZsS via /r/SkyPorn http://ift.tt/1pkLYds

Mount Rainier under a starry sky [1365×2048] Photographed by Bryan Buchanan


http://ift.tt/1p0wRpa via /r/EarthPorn http://ift.tt/1Uu0ifi

Earth from Space


via ESA Top News http://ift.tt/1jlDp9O