(Roughly) Daily

Posts Tagged ‘planet

“Without data, you’re just another person with an opinion”*…

3D visualization of population density in Asia, featuring clusters of colored points to represent varying population concentrations.
The current populations of India and China, visualized

… and that data can be even more useful if we can visualize it. Andrew Zolli introduces a new opportunity…

Whether we’re contending with food shocks, responding to disasters, preventing the next pandemic, helping communities adapt to a changing climate, or just delivering basic governmental services, one constant runs through it all: people. Where we live, how we move, when we gather or flee – these human patterns shape the arc of every modern challenge. Without a deep and dynamic understanding of those patterns, meaningful action becomes not just harder, it becomes guesswork.

That’s why I’m so excited about our ongoing collaboration with colleagues at the Microsoft AI for Good Lab and the Institute for Health Metrics and Evaluation to develop the world’s most up-to-date, highly accurate, high resolution #population density maps. Harnessing the power of Planet’s high-frequency, high-resolution satellite imagery, the AI for Good team’s artificial intelligence expertise, and IHME’s deep demographic modeling capabilities, these population maps allow us to estimate how many people we’re likely to find in every 40 sq meter patch of Earth, in every country of the world. And because the underlying data is updated quarterly, they also allow us to see change over time.

This week, we announced the completion of the first phase of this work at the United Nations AI For Good Global Summit, held in Geneva. We’ve been piloting the use of these population maps as part of the UN’s Early Warnings For All Initiative, which seeks to ensure that everyone on Earth is protected from hazardous weather, water, and climate events. In an early use-case, by overlaying population data with maps of mobile connectivity, we’ve been able to identify unconnected populations that might not be reachable in a crisis.

And that’s just one of what are likely hundreds – even thousands – of ways this kind of population data can be put to work. Knowing where people are settling, and how those patterns are changing, is foundational to everything from public health campaigns to the design of infrastructure and services. If we want to reduce wildfire risk, for example, we need to understand where human communities are pressing into forested frontiers. If we want to evacuate people ahead of an oncoming storm, we need to know how many lives are in harm’s way. And if we want to ensure people aren’t displaced by unlivable heat, we have to overlay human presence with climate exposure.

You can learn more and sign up to explore a coarser (but compelling!) (40km/pixel) visualization of the population data. At the AI for Good Summit, we also announced an Early Access Program for a carefully selected number of trusted organizations who will explore applications of the data and give feedback. If that sounds like it might be of interest, please contact services@healthdata.org

A new tool for visualizing the world in which we live: “Everyone, Everywhere: Mapping Humanity’s Changing Footprint in Unprecedented Detail,” from @andrewzolli.bsky.social‬ and his collegues at Planet.

W. Edwards Deming

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As we get down with data, we might spare a thought for a spiritual ancestor of Planet’s, Denis Diderot; he died on this date in 1784. A philosopher, art critic, and writer, he is best known for serving as co-founder, chief editor, and contributor to the Encyclopédie along with Jean le Rond d’Alembert.

The Encyclopédie is most famous for representing the thought of the Enlightenment. According to Denis Diderot in the article “Encyclopédie”, the Encyclopédie‘s aim was “to change the way people think” and for people to be able to inform themselves and to know things. He and the other contributors advocated for the secularization of learning away from the Jesuits. Diderot wanted to incorporate all of the world’s knowledge into the Encyclopédie and hoped that the text could disseminate all this information to the public and future generations. Thus, it is an example of democratization of knowledge.

It was also the first encyclopedia to include contributions from many named contributors, and it was the first general encyclopedia to describe the mechanical arts. In the first publication, seventeen folio volumes were accompanied by detailed engravings. Later volumes were published without the engravings, in order to better reach a wide audience within Europe…

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“A time will come when men will stretch out their eyes. They should see planets like our Earth.”*…

Not long ago the search for extraterrestrials was considered laughable nonsense. Today, as Adam Frank explains, it’s serious and scientific…

Suddenly, everyone is talking about aliens. After decades on the cultural margins, the question of life in the Universe beyond Earth is having its day in the sun. The next big multibillion-dollar space telescope (the successor to the James Webb) will be tuned to search for signatures of alien life on alien planets and NASA has a robust, well-funded programme in astrobiology. Meanwhile, from breathless newspaper articles about unexplained navy pilot sightings to United States congressional testimony with wild claims of government programmes hiding crashed saucers, UFOs and UAPs (unidentified anomalous phenomena) seem to be making their own journey from the fringes.

What are we to make of these twin movements, the scientific search for life on one hand, and the endlessly murky waters of UFO/UAP claims on the other? Looking at history shows that these two very different approaches to the question of extraterrestrial life are, in fact, linked, but not in a good way. For decades, scientists wanting to think seriously about life in the Universe faced what’s been called the ‘giggle factor’, which was directly related to UFOs and their culture. More than once, the giggle factor came close to killing off the field known as SETI (the search for extraterrestrial intelligence). Now, with new discoveries and new technologies making astrobiology a mainstream frontier of astrophysics, understanding this history has become important for anyone trying to understand what comes next. But for me, as a researcher in the field of technosignatures (signs of advanced alien tech) – the new face of SETI – getting past the giggle factor poses an existential challenge.

I am the principal investigator of NASA’s first ever grant to study signatures of intelligent life from distant exoplanets. My colleagues and I are tasked with developing a library of technosignatures or evidence of technology-wielding life forms on distant planets. Taking on that role has been the culmination of a lifetime fascination with the question of life and the Universe, a fascination that formed when I was a kid in the 1970s, drinking deep from the well of science fiction novels, UFO documentaries and Star Trek reruns. Early on, as a teenager reading both Carl Sagan and Erich von Däniken (the author of Chariots of the Gods), I had to figure out how to separate the wheat from the chaff. This served as a kind of training ground for dealing with questions facing me and my colleagues about proper standards of evidence in astrobiology. It’s also why, as a public-facing scientist, I must work to understand how people not trained in science come to questions surrounding UFOs as aliens. That is what drove me, writing a recent popular-level account of astrobiology’s frontiers called The Little Book of Aliens (2023), to stare hard into the entangled history of UFOs, the scientific search for life beyond Earth, and the all-important question of standards of evidence…

[Frank explains the efforts underway, their history, and the rigor being applied in sifting for credible evidence…]

… With the giggle factor receding for the scientific search for life, where does that leave UFOs and UAPs? There, the waters remain muddied. It is a good thing that pilots feel they can report sightings without fear of reprisal as a matter of air safety and national defence. And an open, transparent and agnostic investigation of UAPs could offer a masterclass in how science goes about its business of knowing rather than just believing. In The Little Book of Aliens, I even explained how such an investigation might be conducted (the recent NASA UAP panel and the Galileo Project are exploring these kinds of options). But if my colleagues and I claimed we’d found life on another world, we’d be required to provide evidence that meets the highest scientific standards. While we should let future studies lead us where they may, there is simply no such evidence surrounding UFOs and UAPs that meets these standards today. In fact, at a recent hearing conducted by NASA’s UAP panel, it was revealed that government studies show only a small percentage of reported sightings failed to find a reasonable explanation. Many of the remaining cases did not have enough data to even begin an attempt at identification. The sky is simply not awash in unexplained phenomena.

In the end, what matters is that, after thousands of years of arguing over opinions about life in the Universe, our collective scientific efforts have taken us to the point where we can finally begin a true scientific study of the question. The next big space telescope NASA is planning will be called the Habitable Worlds Observatory. The name tells you all you need to know. We’re going all in on the search for life in the Universe because we finally have the capabilities to search for life in the Universe. The giggle factor is finally history.

How UFOs almost killed the search for life in the universe: “Alien life is no joke,” from @AdamFrank4 in @aeonmag.

See also: this report on two studies that suggest we may have found evidence of Dyson Spheres—and alien civilizations

For more on a related field, see Astrobiology (@carnegiescience)

Also apposite (and typically for him, both informative and very amusing): John Oliver on UFOs

* the foresightful Christopher Wren

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As we look up, we might recall that it was on this date in 1930 that Pluto was announced to be the name chosen for the newly-discovered ninth planet (previously known as Planet X) by Roger Lowell Putnam, trustee of Lowell Observatory, Flagstaff, Arizona, (and nephew of the late Percival Lowell who had established the observatory and initiated the search there for the ninth planet). Pluto had been located there on in February of that year at that institution by Clyde Tombaugh.

Putnam was quoted on the front page of the New York Times, saying, “We felt in making our choice of a name for Planet X, that the line of Roman gods for whom the other planets are named should not be broken, and we believe that Dr. Lowell, whose researches led directly to its discovery, would have felt the same way.” Pluto in mythology was the ruler of the underworld, regions of darkness. “P.L.” is also Lowell’s monogram.

While it’s still known as Pluto, in 2006 the International Astrophysical Union demoted it from a “planet” to a “dwarf planet.”

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“I believe alien life is quite common in the universe, although intelligent life is less so. Some say it has yet to appear on planet Earth”*…

 

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If the range of habitable radii is sufficiently broad, most inhabited planets are likely to be closer in size to Mars than the Earth. Furthermore, since population density is widely observed to decline with increasing body mass, we conclude that most intelligent species are expected to exceed 300kg…

From the summary of University of Barcelona cosmologist Fergus Simpson‘s paper, “The Nature of Inhabited Planets and their Inhabitants” (which can be downloaded as a PDF here).

* Stephen Hawking

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As we phone home, we might recall that it was on this date in 1960 that the first weather satellite, TIROS I, was launched from Cape Kennedy (or Canaveral, as then it was) and sent back the first television pictures from space. The first in a long series of launches in the TIROS program (Television Infrared Observation Satellite), it was NASA’s initial step, at a time when the effectiveness of satellite observations was still unproven, in determining if satellites could be useful in the study of the Earth.  In the event, TIROS I and it successors proved extremely useful in weather forecasting.

TIROS I prototype at the Smithsonian National Air and Space Museum

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Written by (Roughly) Daily

April 1, 2015 at 1:01 am