May222013

thelastdregs:

Stunning Pixel Art

Created by Waneella

(Source: it8bit, via mykneeisonfire)

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May212013
10AM
May192013

the-star-stuff:

Google Earth Engine is an incredible satellite tour through the recent history of our planet, showing year-by-year images from 1984-2012.

1. Amazon Deforestation

2. Saudi Irrigation

3. Drying of the Aral Sea

4. Columbia Glacier Retreat

5. Dubai Coastal Expansion

6. Growth of Las Vegas

(via abcstarstuff)

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May152013
May122013
12PM
May112013

sagansense:

Nature, deaf to our entreaties, will not alter or change the course of her effects; and those things that we are here trying to investigate have not just occurred once and then vanished, but have always proceeded and will always proceed in the same style. This should be a great restraint upon us, and ought to render us very circumspect about pronouncing on such things. We cannot take care that no passion - either toward others or ourselves - bends us away from our aim of pure truth.

Galileo Galilei (1611)

(via likeaphysicist)

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5PM
May102013

Africa. The world’s greatest wilderness. The only place on earth to see the full majesty of nature. There’s so much more here than we ever imagined.

(via ikenbot)

3PM
May92013

focusbtch:

syrianlady:

This will happen when you leave men alone with babies.

facking hell i cant stop laughing

(via corneliusalba)

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May82013

spaceplasma:

NASA’s Fermi, Swift See ‘Shockingly Bright’ Burst

A record-setting blast of gamma rays from a dying star in a distant galaxy has wowed astronomers around the world. The eruption, which is classified as a gamma-ray burst, or GRB, and designated GRB 130427A, produced the highest-energy light ever detected from such an event.

“We have waited a long time for a gamma-ray burst this shockingly, eye-wateringly bright,” said Julie McEnery, project scientist for the Fermi Gamma-ray Space Telescope at NASA’s Goddard Space Flight Center in Greenbelt, Md. “The GRB lasted so long that a record number of telescopes on the ground were able to catch it while space-based observations were still ongoing.”

The burst subsequently was detected in optical, infrared and radio wavelengths by ground-based observatories, based on the rapid accurate position from Swift. Astronomers quickly learned that the GRB was located about 3.6 billion light-years away, which for these events is relatively close.

Gamma-ray bursts are the universe’s most luminous explosions. Astronomers think most occur when massive stars run out of nuclear fuel and collapse under their own weight. As the core collapses into a black hole, jets of material shoot outward at nearly the speed of light.

The jets bore all the way through the collapsing star and continue into space, where they interact with gas previously shed by the star and generate bright afterglows that fade with time.

If the GRB is near enough, astronomers usually discover a supernova at the site a week or so after the outburst.

“This GRB is in the closest 5 percent of bursts, so the big push now is to find an emerging supernova, which accompanies nearly all long GRBs at this distance,” said Goddard’s Neil Gehrels, principal investigator for Swift.

Ground-based observatories are monitoring the location of GRB 130427A and expect to find an underlying supernova by midmonth.

Explanation:

The 1st animation: The maps in the animation show how the sky looks at gamma-ray energies above 100 million electron volts (MeV) with a view centered on the north galactic pole. The first frame shows the sky during a three-hour interval prior to GRB 130427A. The second frame shows a three-hour interval starting 2.5 hours before the burst, and ending 30 minutes into the event. The Fermi team chose this interval to demonstrate how bright the burst was relative to the rest of the gamma-ray sky. This burst was bright enough that Fermi autonomously left its normal surveying mode to give the LAT instrument a better view, so the three-hour exposure following the burst does not cover the whole sky in the usual way.

The 2nd animation: This animation shows a more detailed Fermi LAT view of GRB 130427A. The sequence shows high-energy (100 Mev to 100 GeV) gamma rays from a 20-degree-wide region of the sky starting three minutes before the burst to 14 hours after. Following an initial one-second spike, the LAT emission remained relatively quiet for the next 15 seconds while Fermi’s GBM instrument showed bright, variable lower-energy emission. Then the burst re-brightened in the LAT over the next few minutes and remained bright for nearly half a day.

Credit: NASA/Swift/Stefan Immler

(via abcstarstuff)

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May72013
3PM

enochliew:

Modules & Colors by Daniele De Nigris

This project is a study on the relationship between modules and colors, turning some simple shapes into something seemingly more complex and dynamic.

(via logicianmagician)

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