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A University of Oklahoma doctoral student, graduate and undergraduate research assistants, and an associate professor in the Homer L. Dodge Department of Physics and Astronomy in the University of Oklahoma College of Arts and Sciences are lead authors on a paper describing a “changing-look” blazar — a powerful active galactic nucleus powered by a supermassive black hole at the center of a galaxy. The paper is published in The Astrophysical Journal.

Hora D. Mishra, a Ph.D. student, and faculty member Xinyu Dai are lead authors of the paper, along with Christopher Kochanek and Kris Stanek at the Ohio State University and Ben Shappee at the University of Hawaii. The paper represents the findings of researchers from 12 different institutions who participated in a two-year collaborative project involving the collection of spectra or imaging data in different electromagnetic bands. The OU team led the effort in analyzing all the data collected from the collaboration and contributed primarily on the interpretation of the analysis results, assisted by OU graduate student Saloni Bhatiani and undergraduate students Cora DeFrancesco and John Cox who performed ancillary analyses to the project.

Starting September 27th.


If you still have a device running Android 2.3.7 (the final version of Gingerbread) or older, Google won’t let you sign in to your Google account on that device starting September 27th, according to a support document (via Liliputing).

“As part of our ongoing efforts to keep our users safe, Google will no longer allow sign-in on Android devices that run Android 2.3.7 or lower starting September 27, 2021,” the company says. “If you sign into your device after September 27, you may get username or password errors when you try to use Google products and services like Gmail, YouTube, and Maps.”

To promote an ethical approach in human-machine interaction.


The theory of mind is about recognizing other minds, comprehend emotions, understand intentions, and predict behaviors that are essential for intelligent social interaction. The capability to detect others’ minds is critical to human cognition and social interaction. It allows us to build relationships and work cooperatively to achieve common goals.

Research has shown that having a sophisticated theory of mind may be a large part of why humans have cognitive skills. This ability is so important that when it is disrupted, as we see in some cases of autism, vital cerebral functions like language learning and imagination become impaired.

So, understanding the theory of mind helps us to anticipate how others might behave in a particular condition. Completely understanding the theory of mind is a complex task indeed.

Engineers usually regard heat as “waste energy” since it is hard to efficiently turn into anything useful. However, a new class of thermoelectric materials could change that after researchers opted to try the exact opposite of the usual approach. A paper in Science Advances explains why, speeding the search for even better versions.

As the name suggests, thermoelectric materials turn heat into electricity, skipping the boiling water stage used in most bulk electricity production. However, cost and inefficiency have kept thermoelectric generators restricted to niche applications, such as powering spacecraft like the Mars Perseverance rover where lightweight, reliable energy production matters more than price.

Thermoelectric materials are too expensive and polluting for more widespread use, but new versions that replace heavier elements with magnesium could change that, opening the door to even better options that could find widespread uses.

Nanoracks has hired a former NASA official most recently involved with planning for Artemis to lead its efforts to develop commercial space stations.


WASHINGTON — Commercial space services company Nanoracks has hired a former NASA official most recently involved with planning for the Artemis program to lead its efforts to develop commercial space stations.

Nanoracks announced Aug. 2 it hired Marshall Smith to be its senior vice president of commercial space stations. Smith retired from NASA at the end of July after more than 35 years at the agency, most recently as deputy associate administrator for systems engineering and integration in the Human Exploration and Operations Mission Directorate.

In his new role, Smith will oversee the company’s Outpost program, which seeks to convert upper stages of launch vehicles into modules that can be used for in-space manufacturing or habitats, as well as plans to develop free-flyer commercial space stations. Smith will run the company’s new office in Huntsville, Alabama.

Should you be worried about the massive space rock that could, theoretically, spell disaster if it were to make landfall on terra firma? No, you shouldn’t. But that doesn’t mean you should ignore it either.

The asteroid, called 2016 AJ193, is just under a mile wide and moving at a speed of 58538 miles per hour, according to EarthSky. Its closest encounter with Earth will occur on August 23 at 11:10 a.m. ET, and experts note that anyone trying to spot the asteroid in the wild will have the best chance of doing so before sunrise. If you’re trying to catch a glimpse of it, you’ll have to use a telescope.

Despite the “potentially hazardous” label designated by NASA, EarthSky is quick to allay any fears of impending apocalypse (at least from this particular asteroid) because it won’t hit Earth.