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aries1988 : earth   40

We decoded NASA’s messages to aliens by hand - YouTube
In 1977, twin golden records were sent into space on the Voyager 1 and 2 spacecraft. Still sailing through space at nearly 60,000 km per hour, the records…
video  earth  image  information  engineering  decode  programming  science 
february 2019 by aries1988
A Grand New Theory of Life's Evolution on Earth - The Atlantic
Judson divides the history of the life on Earth into five energetic epochs, a novel schema that you will not find in geology or biology textbooks. In order, the energetic epochs are: geochemical energy, sunlight, oxygen, flesh, and fire. Each epoch represents the unlocking of a new source of energy, coinciding with new organisms able to exploit that source and alter their planet. The previous sources of energy stay around, so environments and life on Earth become ever more diverse. Judson calls it a “step-wise construction of a life-planet system.”

Which brings us to the epoch of oxygen. Given an opportunity, oxygen will steal electrons from anything it finds. New oxygen-resistant organisms evolve with enzymes to protect them from oxygen. They have advantages too: Because oxygen is so reactive, it makes the metabolism of these organisms much more efficient. In some conditions, organisms can get 16 times as much energy out of a glucose molecule with the presence of oxygen than without.

“Flesh” is source of concentrated energy, rich in fats and protein and carbon.
evolution  earth  energy  idea  book 
july 2018 by aries1988
Letter of Recommendation: iNaturalist - The New York Times

Most of us are oblivious to this winged panoply, even in our own backyards, because our perception is circumscribed by our ecological illiteracy. Learning the names of our many wild neighbors is an exercise in perspective and empathy, transforming the outdoors from a pastoral backdrop into a world of parallel societies inhabited by diverse creatures, each with its own character and career.
nature  love  apps  life  knowledge  howto  tool  opinion  earth  epistemic 
december 2017 by aries1988
Warning of 'ecological Armageddon' after dramatic plunge in insect numbers
Three-quarters of flying insects in nature reserves across Germany have vanished in 25 years, with serious implications for all life on Earth, scientists say
environment  entomology  crisis  science  research  numbers  earth  europe 
october 2017 by aries1988
Analysis | We have a pretty good idea of when humans will go extinct

That radical notion — that we are not, in fact, at the center of the universe — gives rise to what modern scientists call the Copernican Principle: We are not privileged observers of the world around us. We don't occupy a unique place in the universe. We are profoundly ordinary. We are not special.

Assuming that you and I are not so special as to be born at either the dawn of a very long-lasting human civilization or the twilight years of a short-lived one, we can apply Gott's 95 percent confidence formula to arrive at an estimate of when the human race will go extinct: between 5,100 and 7.8 million years from now.
probability  fun  example  human  disaster  berlin  future  prediction  earth  question 
october 2017 by aries1988
Shuttle Radar Topography Mission - Wikipedia
The Shuttle Radar Topography Mission (SRTM) is an international research effort that obtained digital elevation models on a near-global scale from 56° S to 60° N,[2] to generate the most complete high-resolution digital topographic database of Earth prior to the release of the ASTER GDEM in 2009. SRTM consisted of a specially modified radar system that flew on board the Space Shuttle Endeavour during the 11-day STS-99 mission in February 2000, based on the older Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR), previously used on the Shuttle in 1994. To acquire topographic data, the SRTM payload was outfitted with two radar antennas.[2] One antenna was located in the Shuttle's payload bay, the other – a critical change from the SIR-C/X-SAR, allowing single-pass interferometry – on the end of a 60-meter (200-foot) mast that extended from the payload bay once the Shuttle was in space.[2] The technique employed is known as interferometric synthetic aperture radar.
radar  data  earth  terrain  md 
september 2017 by aries1988
A Geographer’s Notebook: the world’s biggest holes
What drove men to drill a hole into the earth’s crust, and what lies beneath the surface
earth 
march 2017 by aries1988
Twitter
RT : "1.5 million penguins on an island just 5km across."
by from Islands
planet  earth  bbc  documentary  animal  southpole  tv 
january 2017 by aries1988
An Exoplanet Too Far - The New Yorker
Anglada-Escudé and his colleagues estimate that Proxima b is at least 1.3 times as big as Earth and is most likely a terrestrial planet, with a surface. It orbits its star at a dizzying pace, once every eleven days, at a distance twenty times closer than Earth is to the sun. But, because the star is much dimmer than the sun, the average temperature on Proxima b could potentially be temperate and the orbit “is within the range where water could be liquid on its surface,” the researchers write in their Nature paper.

The planet is also likely tidally locked, like our moon, with one side permanently in light; good luck to anyone doomed to live on the frigid dark side.

In fact, it wouldn’t even be there by the time we arrived. Stars wander ever so slightly, and the cosmos as a whole is expanding; in the next eighty thousand years, Proxima Centauri and its planet will have moved two light-years farther from Earth, adding another forty thousand years to the trip. “The universe is moving,” Pedro Amado, of the Instituto de Astrofísica de Andalucía, said yesterday.
cosmos  opinion  human  earth  discovery  future 
august 2016 by aries1988
Scientists Confirm China's Legendary Ancient Flood Was Real
Around 4000 years ago, an earthquake rumbled through central China, creating a massive landslide in deep, narrow valley with rocky, steep sides. That landslide corked up the gorge, forming a pyramid-like dam of rock and dirt that blocked the Yellow River. Wu's team believes that for somewhere between 6 to 9 months, that dam held. As the riverbed downstream turned dry, a tenuous lake of 4 cubic miles of water—half the size of Lake Mead behind the Hoover Dam—was growing.

But, as the rising lakewater eventually spilled over the new dam, it wasn't just a trickle. The whole thing broke, releasing a horrific torrent of destruction. "It's among the largest known floods to have happened on earth during the past 10,000 years. And it's more than 500 times larger than a flood we might expect on the Yellow River from a massive rainfall," says Darryl Granger—a geologist at Purdue University in Lafayette, Indiana—with the research team.
geology  earth  china  history  discovery  disaster 
august 2016 by aries1988
The Search for 'Earth Proxima'
A short film about a team of scientists and their mission to build a powerful telescope to explore exoplanets.
science  scientist  astronomy  earth  planet  cosmos 
july 2016 by aries1988
Man of the world
Why a Prussian scientific visionary should be studied afresh
nature  scientist  deutsch  biology  idea  earth 
november 2015 by aries1988
Episode 645: How To Stop An Asteroid
Some smart people say we should be doing more to protect the earth from asteroids. The technical issues are relatively easy. The economics — figuring out who's going to pay — are much harder.
earth  risk  management  podcast 
august 2015 by aries1988
Japan’s New Satellite Captures an Image of Earth Every 10 Minutes - The New York Times
A sense of perspective is unavoidable from 22,000 miles out. Looking down at Earth from that distance — almost three times farther than the diameter of the planet itself — allows a view of the globe as a massive organic system, pulsing with continuous movement.
earth  japan  image  satellite 
july 2015 by aries1988
Wind and wave farms could affect Earth's energy balance
At present, humans use only about 1 part in 10,000 of the total energy that comes to Earth from the sun. But this ratio is misleading, Kleidon says. Instead, we should be looking at how much useful energy - called “free” energy in the parlance of thermodynamics - is available from the global system, and our impact on that.

Humans currently use energy at the rate of 47 terawatts (TW) or trillions of watts, mostly by burning fossil fuels and harvesting farmed plants, Kleidon calculates in a paper to be published in Philosophical Transactions of the Royal Society. This corresponds to roughly 5 to 10 per cent of the free energy generated by the global system.

Although the winds will not die, sucking that much energy out of the atmosphere in Kleidon’s model changed precipitation, turbulence and the amount of solar radiation reaching the Earth’s surface. The magnitude of the changes was comparable to the changes to the climate caused by doubling atmospheric concentrations of carbon dioxide (Earth System Dynamics, DOI: 10.5194/esd-2-1-2011).
eolien  opinion  earth  energy 
january 2015 by aries1988
Is a Climate Disaster Inevitable?
The physicist Enrico Fermi first formulated this question, now called the Fermi paradox, in 1950. But in the intervening decades, humanity has recognized that our own climb up the ladder of technological sophistication comes with a heavy price. From climate change to resource depletion, our evolution into a globe-spanning industrial culture is forcing us through the narrow bottleneck of a sustainability crisis. In the wake of this realization, new and sobering answers to Fermi’s question now seem possible.
science  scifi  future  civ  earth  space  climate 
january 2015 by aries1988
Researchers use Moore's Law to calculate that life began before Earth existed
(Phys.org) —Geneticists Richard Gordon of the Gulf Specimen Marine Laboratory in Florida and Alexei Sharov of the National Institute on Aging in Baltimore have proposed, in a paper uploaded to the preprint server arXiv, that if the evolution of life follows Moore's Law, then it predates the existence of planet Earth.
earth  environment  life 
december 2013 by aries1988
Hyperwall Item 30017 - GEOS-5 Nature Run Collection
Really cool NASA videos here! Impressive simulation of global weather systems
video  earth  simulation  weather 
november 2013 by aries1988
Ex-CIA analyst finds mysterious Chinese complex on Google Earth (Wired UK)
Ex-CIA analyst finds mysterious Chinese complex on Google Earth
google  earth  fun 
january 2013 by aries1988

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