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Sep 21, 2022

Chinese scientists experiment with ethylene and coal power for hypersonic travel

Posted by in category: energy

Chinese researchers expect to significantly reduce the costs of commercial hypersonic travel with a novel engine using a combination of ethylene and coal powder, according to an article published by the South China Morning Post (SCMP) on Tuesday.

In tests conducted, a prototype using the affordable and efficient mixture produced shocks traveling at more than 2km (1.24 miles) per second, or six times the speed of sound, the scientists claimed in a new paper published in the China Ordnance Society’s peer-reviewed Acta Armamentarii journal on September.

Sep 21, 2022

Hilton to design hotel rooms for astronauts aboard Starlab

Posted by in category: space travel

The hotel giant will help “reimagine the human experience in space, making extended stays more comfortable”.

In Stanley Kubrick’s landmark film, 2001: A Space Odyssey, a Hilton hotel is seen orbiting the Earth. More than 20 years later, sci-fi fantasy has become reality.

Hotel behemoth Hilton has signed on to design astronaut facilities for an Earth-orbiting commercial space station Starlab, Voyager Space, a global leader in space exploration, announced. Starlab is currently under development by Voyager Space Holdings and Lockheed Martin, who first announced the orbiting complex in 2021.

Sep 21, 2022

I spent a year in outer space on the International Space Station. The experience still chokes me up — here’s what my days looked like

Posted by in categories: habitats, space

Mark T. Vande Hei did experiments, spacewalked, and even did house chores and worked out. He loved to meditate with Earth in full view.

Sep 21, 2022

10 Spooky Alien Zoo Hypothesis Scenarios

Posted by in category: existential risks

An exploration of ten somewhat spooky scenarios hidden within the zoo hypothesis solution to the Fermi Paradox.

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Sep 21, 2022

Do We Live in a Brave New World? — Aldous Huxley’s Warning to the World

Posted by in categories: bitcoin, cryptocurrencies, media & arts

A possible world fortunately not the only one to choose from the choice is ours.


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Sep 21, 2022

Gary Numan — Metal Video

Posted by in category: electronics

TV special video for Metal.

Sep 21, 2022

Thread: Support us! We are indie developers!

Posted by in category: computing

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

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Sep 21, 2022

Solar flare, like SpaceX satellite crasher, disrupts comms

Posted by in categories: energy, satellites

A solar flare erupted from a departing sunspot on September 16, releasing a pulse of X-rays and extreme UV radiation which caused a shortwave radio blackout in Africa and the Middle East. Frequencies below 25 MHz were affected for up to an hour after the flare.

Solar flare strength is measured much like the Richter scale which measures earthquakes. Solar flares are classed A, B, C, M or X where each successive letter corresponds to a 10-fold increase in energy output. A-class solar flares are barely above background radiation emission from the sun.

Spaceweather.com reports that the September 16 solar flare, exploding out of sunspot AR3098, was an M8-class, meaning it was nearly an X-flare, the most powerful kind.

Sep 21, 2022

New Webb image captures clearest view of Neptune’s rings in decades

Posted by in category: space

The NASA/ESA/CSA James Webb Space Telescope is showing off its capabilities closer to home with its first image of Neptune. Not only has Webb captured the clearest view of this peculiar planet’s rings in more than 30 years, but its cameras are also revealing the ice giant in a whole new light.

Most striking about Webb’s new image is the crisp view of the planet’s dynamic rings — some of which haven’t been seen at all, let alone with this clarity, since the Voyager 2 flyby in 1989. In addition to several bright narrow rings, the Webb images clearly show Neptune’s fainter dust bands. Webb’s extremely stable and precise image quality also permits these very faint rings to be detected so close to Neptune.

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Sep 21, 2022

Her work helped her boss win the Nobel Prize. Now the spotlight is on her

Posted by in categories: computing, information science, mathematics, space

Scientists have long studied the work of Subrahmanyan Chandrasekhar, the Indian-born American astrophysicist who won the Nobel Prize in 1983, but few know that his research on stellar and planetary dynamics owes a deep debt of gratitude to an almost forgotten woman: Donna DeEtte Elbert.

From 1948 to 1979, Elbert worked as a “computer” for Chandrasekhar, tirelessly devising and solving mathematical equations by hand. Though she shared authorship with the Nobel laureate on 18 papers and Chandrasekhar enthusiastically acknowledged her seminal contributions, her greatest achievement went unrecognized until a postdoctoral scholar at UCLA connected threads in Chandrasekhar’s work that all led back to Elbert.

Elbert’s achievement? Before anyone else, she predicted the conditions argued to be optimal for a planet or star to generate its own magnetic field, said the scholar, Susanne Horn, who has spent half a decade building on Elbert’s work.