Science

The enantioselective construction of small ring carbocycles provides organic chemists with an enduring challenge.1 Despite their commercial importance, enantioselective synthetic routes towards alkylidenecyclopropanes (ACPs), a class of small ring carbocycles, remain underdeveloped.2,3 Importantly, ACPs can be converted into cyclopropanes, a common feature in drug molecules (e.g. Nirmatrelvir, 1),4 as well as both naturally occurring and synthetic agrochemicals (e.q. permethrin 2).5,6 …

NASA Leadership Announcement: International, Interagency Relations  NASA Watch Source link

Astronomers Spot Possible Biggest Black Hole in the Universe  SciTechDailyView Full Coverage on Google News Source link

Here’s what you’ll learn when you read this story: A research paper proposes a fully physically realized model for warp drive. This builds on an existing model that requires negative energy—an impossibility. The new model is exciting, but warp speed is still probably decades or centuries away. In a surprising paper, scientists say they’ve nailed down a physical model for …

The Moon completes about 12.37 orbits of Earth each year. Most years see 12 new moons, but occasionally there are 13. When a season, defined as the period between a solstice and an equinox, contains four new moons, the fourth is called a black moon. The term, first used in astrological circles centuries ago to describe a mythical hidden moon, …

Sign up for Big Think on Substack The most surprising and impactful new stories delivered to your inbox every week, for free. The following is an excerpt from Cate Hall’s forthcoming book, You Can Just Do Things. It’s a funny quirk of the human condition that sometimes simply asking, of a given task, “How would someone much, much better than …

In a major step forward for one of NASA’s most anticipated space observatories, engineers at the Goddard Space Flight Center in Greenbelt, Maryland, have successfully installed two sunshields on the Nancy Grace Roman Space Telescope. “This shield is like an extremely strong sunblock for Roman’s sensitive instruments, protecting them from heat and light from the sun that would otherwise overwhelm …

What could the next mega-earthquake on California’s notorious San Andreas fault look like? Would it be a repeat of 1857, when an earthquake estimated at magnitude 7.7 to 7.9 ruptured the fault from Monterey County all the way through Los Angeles County? Would it be more akin to the great 1906 San Francisco earthquake, which began just offshore of the …

WASHINGTON — Intuitive Machines has decided to bring in-house the production of satellites for a cislunar communications system, giving the company more schedule control and the ability to pursue other satellite opportunities. To continue reading this article: Register now and get3 free articles every month. You’ll also receive our weekly SpaceNews This Week newsletter every Friday. Opt-out at any time. …

In Argentina’s Patagonia, researchers have uncovered a previously unknown dinosaur species that lived approximately 95 million years ago. Named Astigmasaura genuflexa, this massive plant-eating sauropod measured nearly 60 feet in length and weighed more than 10 tons, placing it among the last members of the Rebbachisauridae family before their disappearance around 90 million years ago. The discovery is detailed in …