Astronomers have long debated the source of ULXs, chalking their brightness up to optical illusions. A new study confirms that they’re all that they appear.
Category: space – Page 268
Researchers replicated the classic double slit experiment using lasers, but their slits are in time not space.
Every time a person dies, writes Russian novelist Vasily Grossman in Life and Fate, the entire world that has been built in that individual’s consciousness dies as well: “The stars have disappeared from the night sky; the Milky Way has vanished; the sun has gone out… flowers have lost their color and fragrance; bread has vanished; water has vanished.” Elsewhere in the book, he writes that one day we may engineer a machine that can have human-like experiences; but if we do, it will have to be enormous—so vast is this space of consciousness, even within the most “average, inconspicuous human being.”
And, he adds, “Fascism annihilated tens of millions of people.” Trying to think those two thoughts together is a near-impossible feat, even for the immense capacities of our consciousness. But will machine minds ever acquire anything like our ability to have such thoughts, in all their seriousness and depth? Or to reflect morally on events, or to equal our artistic and imaginative reach? Some think that this question distracts us from a more urgent one: we should be asking what our close relationship with our machines is doing to us.
Jaron Lanier, himself a pioneer of computer technology, warns in You Are Not a Gadget that we are allowing ourselves to become ever more algorithmic and quantifiable, because this makes us easier for computers to deal with. Education, for example, becomes less about the unfolding of humanity, which cannot be measured in units, and more about tick boxes.
In 1918, the American chemist Irving Langmuir published a paper examining the behavior of gas molecules sticking to a solid surface. Guided by the results of careful experiments, as well as his theory that solids offer discrete sites for the gas molecules to fill, he worked out a series of equations that describe how much gas will stick, given the pressure.
Now, about a hundred years later, an “AI scientist” developed by researchers at IBM Research, Samsung AI, and the University of Maryland, Baltimore County (UMBC) has reproduced a key part of Langmuir’s Nobel Prize-winning work. The system— artificial intelligence (AI) functioning as a scientist—also rediscovered Kepler’s third law of planetary motion, which can calculate the time it takes one space object to orbit another given the distance separating them, and produced a good approximation of Einstein’s relativistic time-dilation law, which shows that time slows down for fast-moving objects.
A paper describing the results is published in Nature Communications on April 12.
NASA ’s EZIE mission has passed a critical review and remains on track for a launch next year. The mission aims to study auroral electrojets in Earth’s ionosphere, providing insights into the Sun-Earth connection and space weather impacts on Earth. The project will also distribute educational kits to inspire the next generation of scientists.
With an orbit that will take it from pole to pole, NASA’s Electrojet Zeeman Imaging Explorer (EZIE) mission will provide never-before-seen imaging of the electrical currents that link our planet and the surrounding space. But before it can do that, the EZIE team has to pass a series of reviews to demonstrate the mission is on track.
On March 23, the team successfully cleared one of those critical reviews, marking a major milestone for the project and keeping it on pace for a scheduled launch next year.
WASHINGTON — In an effort to keep up with the ever-increasing demands of U.S. military services, the Space Force will propose a new plan to acquire high-capacity satellite communications.
Senior members of the Joint Chiefs of Staff are set to be briefed on this plan in the coming weeks, said Lt. Gen. Philip Garrant, deputy chief of space operations for strategy, plans, programs and requirements.
“We are working through the wideband satellite communications force design, and we’re going to brief that to the JROC sometime before early May,” Garrant told SpaceNews.
The Cubic Emergency Lunar Vehicle of China can be folded and tucked into the back of a regular roving vehicle and when in use can travel up to 10km/h on the moon’s surface, say researchers.
Space travel, exploration, and observation involve some of the most complex and dangerous scientific and technical operations ever carried out. This means that it tends to throw up the kinds of problems that artificial intelligence (AI) is proving itself to be outstandingly helpful with.
Because of this, astronauts, scientists, and others whose job it is to chart and explore the final frontier are increasingly turning to machine learning (ML) to tackle the everyday and extraordinary challenges they face.
AI is revolutionizing space exploration, from autonomous spaceflight to planetary exploration and charting the cosmos. ML algorithms help astronauts and scientists navigate and study space, avoid hazards, and classify features of celestial bodies.
Researchers have developed a new way to produce and shape large, high-quality mirrors that are much thinner than the primary mirrors previously used for telescopes deployed in space. The resulting mirrors are flexible enough to be rolled up and stored compactly inside a launch vehicle.
“Launching and deploying space telescopes is a complicated and costly procedure,” said Sebastian Rabien from Max Planck Institute for Extraterrestrial Physics in Germany. “This new approach—which is very different from typical mirror production and polishing procedures—could help solve weight and packaging issues for telescope mirrors, enabling much larger, and thus more sensitive, telescopes to be placed in orbit.”
In the journal Applied Optics, Rabien reports successful fabrication of parabolic membrane mirror prototypes up to 30 cm in diameter. These mirrors, which could be scaled up to the sizes needed in space telescopes, were created by using chemical vapor deposition to grow membrane mirrors on a rotating liquid inside a vacuum chamber. He also developed a method that uses heat to adaptively correct imperfections that might occur after the mirror is unfolded.