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Archive for the ‘space’ category: Page 73

May 3, 2024

Nuclear rocket with 100,000 N thrust could offer fastest Mars trips

Posted by in category: space

This propulsion system would produce up to 100,000 N of thrust with a specific impulse (Isp) of 5,000 seconds.

May 3, 2024

LUNAR Space Models

Posted by in categories: engineering, space

Casting a branded short film about engineering in space — to be released on YouTube and company’s dot.com

Production states: “This is a cool project — Talent will be wearing specially constructed high-end space suits! Shorts/recuts for use in social media (Instagram and LinkedIn). Still images to be used for promotional purposes (social) and on the film landing page. Recuts and stills for paid media (banner ads) related to the film.”

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May 3, 2024

The Moon Turned Itself Inside Out, Scientists Confirm

Posted by in category: space

Small Bang Scientists seem to have figured out why the Moon is made up of such weird and heavy rocks: way back in the day, it turned itself inside out.

For decades now, scientists have pretty much agreed that the Moon formed from debris that flew off the young Earth when another planet smashed into it about 4.5 billion years. That cosmic wreckage “coalesced, cooled and solidified” to form the Moon as we know it today, researchers from the University of Arizona’s Lunar and Planetary Laboratory wrote in a press release — but what happened next is something of a “choose-your-own adventure,” as the scientists describe it.

In a new paper published in the journal Nature Geoscience, the LPL researchers found that the surprisingly high concentration of titanium found in Moon rocks, such as those brought back during the Apollo mission in the 1970s, could be the result of heavy minerals like ilmenite, which is rich in both titanium and iron, initially sinking to the core and then rising back up to the surface.

May 2, 2024

Challenges of Exoplanet Exploration: Defining Biosignatures on Distant Worlds

Posted by in categories: computing, space

Exoplanet, K2-18b, raised several eyebrows with both the scientific community and the public in 2023 when NASA’s James Webb Space Telescope found a molecule called dimethyl sulphide (DMS) in the atmosphere of this Hycean world. However, a recent study published in The Astrophysical Journal Letters consisting of a team of international researchers led by the University of California, Riverside (UC Riverside) use computer models to challenge these recent findings. This study holds the potential to help scientists better understand what data analysis methods are the most efficient in identifying potential biosignatures on exoplanets.

“What was icing on the cake, in terms of the search for life, is that last year these researchers reported a tentative detection of dimethyl sulfide, or DMS, in the atmosphere of that planet, which is produced by ocean phytoplankton on Earth,” said Dr. Shang-Min Tsai, who is a postdoctoral researcher at UC Riverside and lead author of the study.

For the study, the researchers used a variety of 2D and 3D computer models to ascertain the likelihood of detecting DMS within the data. in the end, they found that DMS could not be detected within the data but were quick to note that accumulation of DMS could result in it reaching amounts where it could be detected. To find DMS, JWST would need to use a more powerful instrument than what it used last year to identify DMS, which it hopes to use later this year.

May 1, 2024

Mapping Exoplanet Weather: Insights from Webb’s Telescope

Posted by in categories: mapping, space

Can an exoplanet’s weather be mapped similar to weather on Earth and even some of the gas giants in our solar system? This is what a recent study published in Nature Astronomy hopes to address as a team of international researchers used NASA’s James Webb Space Telescope to investigated weather patterns on WASP-43 b, which is a “hot Jupiter” gas giant exoplanet located approximately 280 light-years from Earth. This study holds the potential to help astronomers develop new methods and techniques in conducting atmospheric science on planetary bodies light years from Earth.

Discovered in 2011 by the La Silla Observatory in Chile using the transit method, WASP-43 b has a radius just slightly larger than Jupiter and whose mass is slightly more than double an orbital period of 0.8 days. Because of this extremely close distance, WASP-43 b is tidally locked to its parent star, meaning one side always faces it while the opposite side always faces away from it. In 2014, NASA’s Hubble Space Telescope conducted its own weather mapping of WASP-43 b, discovering its atmosphere reflects only small amounts of sunlight, which is in stark contrast to the Earth, along with discovering the presence of water vapor. Additionally, WASP-43 b was also observed by the now-retired NASA Spitzer Space Telescope.

“With Hubble, we could clearly see that there is water vapor on the dayside. Both Hubble and Spitzer suggested there might be clouds on the nightside,” said Dr. Taylor Bell, who is a researcher from the Bay Area Environmental Research Institute and lead author of the study. “But we needed more precise measurements from Webb to really begin mapping the temperature, cloud cover, winds, and more detailed atmospheric composition all the way around the planet.”

May 1, 2024

Beautiful Nebula, Violent History: Clash of Stars Solves Stellar Mystery

Posted by in category: space

When astronomers looked at a stellar pair at the heart of a stunning cloud of gas and dust, they were in for a surprise. Star pairs are typically very similar, like twins, but in HD 148,937, one star appears younger and, unlike the other, is magnetic.

New data from the European Southern Observatory (ESO) suggest there were originally three stars in the system, until two of them clashed and merged. This violent event created the surrounding cloud and forever altered the system’s fate.

“When doing background reading, I was struck by how special this system seemed,” says Abigail Frost, an astronomer at ESO in Chile and lead author of the study, “A magnetic massive star has experienced a stellar merger,” published in Science.

May 1, 2024

Turning up the heat on data storage: New memory device paves the way for AI computing in extreme environments

Posted by in categories: mobile phones, robotics/AI, space

A smartphone shutting down on a sweltering day is an all-too-common annoyance that may accompany a trip to the beach on a sunny afternoon. Electronic memory within these devices isn’t built to handle extreme heat.

As temperatures climb, the electrons that store data become unstable and begin to escape, leading to device failure and loss of information. But what if gadgets could withstand not just a hot summer day but the searing conditions of a jet engine or the harsh surface of Venus?

In a paper published in the journal Nature Electronics, Deep Jariwala and Roy Olsson of the University of Pennsylvania and their teams at the School of Engineering and Applied Science demonstrated capable of enduring temperatures as high as 600° Celsius—more than twice the tolerance of any commercial drives on the market—and these characteristics were maintained for more than 60 hours, indicating exceptional stability and reliability.

Apr 30, 2024

Astronomers Think They’ve Found Examples of the First Stars in the Universe

Posted by in category: space

Researchers using the JWST may have found evidence of the Universe’s first stars. Called Population III stars, they were massive and hot.

Apr 30, 2024

NASA’s Psyche sends back engineering data via laser beam

Posted by in categories: engineering, space

So we can now entertain idea of overseeing our solar system by placing a network of comm satelites…live orbital feeds from at least our neerest solar objects.


Laser beam comms are fast, so long as the weather cooperates.

Apr 29, 2024

Japan probe finds scars of micrometeoroid bombardment on asteroid Ryugu

Posted by in categories: robotics/AI, space

Direct sample analysis offers several advantages over robotic explorers conducting it from the surface of an asteroid or planet and then beaming back the data.

It provides a window into understanding how the surface of a celestial body has changed due to its constant exposure to the harsh deep space environment.

The scientists conducted their analysis using electron holography, a technique in which electron waves infiltrate materials. This method has the potential to uncover key details about the sample’s structure and magnetic and electric properties.

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