A Louisville grand jury indicted Nathan A. Stotts on charges of second-degree manslaughter and reckless homicide in the fatal shooting of Martin Nitzken Jr.
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A Louisville grand jury indicted Nathan A. Stotts on charges of second-degree manslaughter and reckless homicide in the fatal shooting of Martin Nitzken Jr.
Our search for technosignatures—clear signs of advanced civilizations beyond Earth—takes many forms. Many are driven by the famous Drake equation, which attempts to estimate how many technological civilizations there are in the Milky Way. However, there’s a big fat question mark at the end of that equation in the form of a variable intended to account for the “longevity” of a civilization. And to be clear, that doesn’t mean how long the civilization itself survives. It simply means how long it actively creates a signature that is detectable by our current technology.
Italian astronomers have used the Very Large Telescope (VLT) to perform polarimetric observations of the star WRAY 15-1880 and its young circumstellar disk. Results of the new observations, presented June 10 on the arXiv preprint server, suggest that this disk may host a primitive planetary system.
Astronomers have detected one of the most powerful ultra-fast outflows ever seen from a distant supermassive black hole. Using XMM-Newton and NuSTAR, a team studied a hyper-luminous quasar at cosmic noon and found two distinct wind components blasting away from the black hole, details of which are outlined in a paper submitted to the arXiv preprint server on June 3. The study has been submitted to the journal Astronomy & Astrophysics and is currently under minor revision.
SpaceX shares shot 20% higher Monday as the company said it raised a record-breaking $85.7 billion.
Venus’ bizarre and extraordinarily slow retrograde rotation on its axis has long puzzled planetary scientists. But in a new paper presented at the recent European Geosciences Union General Assembly in Vienna, the authors argue that their models indicate a high-angle, moon-sized, high-velocity impactor likely triggered Venus’ strange 248-day rotation. And it probably happened within the first 50 million years of Venus’ formation.
When stars like our sun age, they puff up into red giants. Their bubbling outer mass gradually escapes into space, and their remaining cores contract into white dwarfs. Since most stars end their lives this way, the universe is teeming with white dwarfs. A new study from Caltech’s Jim Fuller, professor of theoretical astrophysics, proposes a new model of the final death throes of sun-like stars that shows how escaping mass from the stars’ surfaces leads to a series of little kicks.
The aftermath of a supernova, a stellar explosion, is usually a slowly fading cloud of hot gas. So when astronomers pointed NASA’s Chandra X-ray Observatory at the nearby galaxy Messier 83 (M83), they did not expect to find a population of supernova remnants, or the debris from these explosions, showing dramatic changes in their brightness. The new results have been presented at the American Astronomical Society meeting in Pasadena, California, and published in The Astrophysical Journal.
Researchers around the world are racing to develop new quantum-based systems for sensing, communication, computing and control that have the promise of outperforming traditional systems. Creating stable, measurable, distinguishable quantum states—which would be the heart of any such system—is a daunting task.
Sgt. Connor Hardy has gone viral after mingling with a crowd of American and Scottish soccer fans, juggling a ball and doing a celebratory dance
Caltech researchers have identified a novel chemical reaction that could explain the formation of the building blocks of DNA and RNA, the molecules that encode all of life’s functions. The work is an important step toward understanding how life may have emerged on Earth and potentially elsewhere in the universe, showing the straightforward and efficient pathways through which simple molecules can give rise to complex biological precursors.
Debris is still raining down on Earth more than 100 million years after the giant cosmic explosion that created it. A study published this week in Nature Astronomy by an international team reached this conclusion using measurements of rare isotopes within a slow-growing ferromanganese crust recovered from the depths of the Pacific Ocean.
A team of astronomers, led by Brooke Kotten of the University of Michigan, has shown that TOI-5882—a sunlike star located some 1,300 light-years away—has likely eaten one of its planets.
Saturn’s largest moon, Titan, is a unique environment in our solar system. It is the only moon (or body beyond Earth) to have a dense, nitrogen-rich atmosphere, and its methane cycle is very similar to Earth’s hydrological cycle, in which solid and liquid methane evaporate to form clouds and return to the surface as precipitation. In addition, its prebiotic surface environment and rich organic chemistry make it a prime destination for astrobiology missions, such as NASA’s Dragonfly mission (set to launch no earlier than July 2028).
Picture the Milky Way not as a silent pinwheel of stars but as something that quietly sings. Scattered through it are millions of pairs of dead stars, mostly white dwarfs, whirling around each other and stirring ripples in spacetime as they go. Individually, these ripples are far too faint to notice. Together, they blur into a constant background hum, and a planned European space mission called LISA is being built to listen for it.
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