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435 Added | 16 Magazines | 16 Likes | 7 Following | 73 Followers | @ghal | Keep up with ghal on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “ghal”

My Must-Have Mac Apps, 2017 Edition

It’s been quite a year. At the start, I was still commuting to Chicago every day to work in a law office full of Windows PCs. Now I work from my home studio surrounded by Apple hardware, moving back and forth from a late-2016 MacBook Pro to iOS devices as I write and talk about apps each day.<p>When I …

Astronomer spots mysterious cigar-shaped objects in Orion nebula [WATCH VIDEO]

These unidentified cigar-shaped objects appear to be moving when they are seen frame by frame.<p>Image of a mysterious cylindrical object has been …

Astronomers have observed the most-distant supermassive black hole

Astronomers have made a surprise discovery of the most-distant supermassive black hole ever seen. First observed by Carnegie Observatories …

Universe

Raspberry Pi as Low-Cost HD Surveillance Camera @RaspberryPi #piday #raspberrypi

October 18, 2013 AT 12:01 am<p>Raspberry Pi as Low-Cost HD Surveillance Camera @RaspberryPi #piday #raspberrypi

How to set up a Raspberry Pi 3 from scratch (with video)!

MarchIsForMakers continues! It's my month-long collaboration with Saron from CodeNewbie. We've had some amazing guests on our respective podcasts and …

Raspberry Pi

Time Travel Isn't Possible…Or Is It?

<i>Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI Science Center. Sutter is also host of Ask a Spaceman,</i> …

Forty years on, Voyager still hurtles through space

Are we alone?<p>Forty years ago, NASA rocket scientists sought to answer this question by launching the Voyager spacecraft, twin unmanned spaceships …

Interactive Visibility toolbar Add-In is available for download

With Spatial Analyst you can perform visibility analysis, but you may have found that altering the parameters of the operation can be a little …

Get Your Free Guide to Astrophotography from Sky & Telescope!

If you've glimpsed a photo of the colorful Orion nebula or Saturn's proud rings, you've probably wondered . . . could I do that? The idea of …

Off the streets, Land subdivision in PostGIS - Part 2

Intro<p>In a previous post, we've seen how PostGIS and Openstreetmap can be used to leverage geographical data.<p>A common task in GIS(in particular land …

Data Science

PostGIS - How to create a Spatial Database with PGC Command Line

We are excited to announce that BigSQL distributions of PostGIS now come bundled with several popular community spatial extensions:<p>This is the only …

The Simple and Free PostGIS VS the Complex and Expensive Oracle Spatial

Spatial Database battles exists since … the existence of spatial databases! Two most prominent spatial database in the GIS world are <b>Oracle Spatial</b> …

PostGIS and Spatial SQL

ETL (Extract, Transform, Load) PostGIS Data with ogr2ogr

In an earlier <b>post</b>, I showed you how to use the shp2pgsql tool to import shapefiles into PostGIS. But what if you need to import other geodata formats …

Databases

How Basic Performance Analysis Saved Us Millions

This is the story of how I applied basic performance analysis techniques to find a small change that resulted in a 10x improvement in CPU use for our …

Databases

Top 10 Problems Solved by PostGIS

Regina Obe and Leo Hsu are co-founders of Paragon Corporation, a database and web application consulting company based in Boston. They have extensive …

YouTube

Stars were battling each other in a gravitational tussle, which ended with the system breaking apart and at least three stars being ejected in different directions. The speedy, wayward stars went unnoticed for hundreds of years until, over the past few decades, two of them were spotted in infrared and radio observations, which could penetrate the thick dust in the Orion Nebula. The observations showed that the two stars were traveling at high speeds in opposite directions from each other. The stars' origin, however, was a mystery. Astronomers traced both stars back 540 years to the same location and suggested they were part of a now-defunct multiple-star system. But the duo's combined energy, which is propelling them outward, didn't add up. The researchers reasoned there must be at least one other culprit that robbed energy from the stellar toss-up. Now Nthe Hubble Space Telescope has helped astronomers find the final piece of the puzzle by nabbing a third runaway star. The astronomers followed the path of the newly found star back to the same location where the two previously known stars were located 540 years ago. The trio reside in a small region of young stars called the Kleinmann-Low Nebula, near the center of the vast Orion Nebula complex, located 1,300 light-years away. The image by Hubble shows a grouping of young stars, called the Trapezium Cluster. Credits

ATG medialab

It's Hubble Time!⠀ ⠀ The NASA/ESA Hubble Space Telescope observed one of most massive known galaxy clusters, RX J1347.5–1145, seen in this Picture of the Week, as part of the Cluster Lensing And Supernova survey with Hubble (CLASH). This observation of the cluster, 5 billion light-years from Earth, helped the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile to study the cosmic microwave background using the thermal Sunyaev-Zel’dovich effect. The observations made with ALMA are visible as the blue-purple hues.⠀ ⠀ Go to our @instagram Story to learn more and download this image.⠀ ⠀ 📸 @europeanspaceagency/Hubble & @NASA, T. Kitayama (Toho University, Japan)

Clash of Titans!⠀ ⠀ ⠀ ⠀ This encounter among members of a famous galaxy quintet reveals an assortment of stars across a wide colour range, from young, blue stars to aging, red stars.⠀ ⠀ This portrait of Stephan's Quintet, also known as the Hickson Compact Group 92, was taken by the new Wide Field Camera 3 (WFC3) aboard the NASA

ArcGIS Python API 1.0 Released

At the Esri User Conference in San Diego last year, a small team of Esri engineers from the Python and Server teams huddled together with Scott …

Python Programming

Formatting an Excel table for use in ArcGIS

<b>By Aileen Buckley, Esri Cartographer</b>To use an Excel table in ArcGIS, it should first be formatted correctly so that ArcGIS can read the table without …

Databases

Esri Selects Anaconda to Enhance GIS Applications with Open Data Science

AUSTIN, Texas--(BUSINESS WIRE)--Continuum Analytics, the creator and driving force behind Anaconda, the leading Open Data Science platform powered by …

Big Data

Is spending billions on space research worth it?

Scientists have discovered nearly 3,500 planets that circle a star other than our sun. And, yet, something about the announcement of seven new exoplanets this week seemed to have struck a chord with millions of people in ways the previous thousands did not. Even my colleague’s six-year-old daughter …

Universe

Top 10 Raspberry Pi Zero Projects That Make Use of Its Small Stature

The Raspberry Pi has long been the hobbyist choice for DIY electronics projects. The Raspberry Pi Zero, which is about the size of a stick of gum, …

Want to Find an Exoplanet Yourself? Scientists Release Huge Star Dataset and Tools to Public

If the discovery of 7 new exoplanets with potential for life that were found just outside our solar system got you excited, there’s now something you …

Universe
Physics

Every Map You’ve Ever Seen is Radically Inaccurate

You know that moment when you get mind-f***ed so hard you just casually lean back in your chair, your eyes glaze over, and you mouth-breathe deeply? …