Category: Science

Asteroids made of “rubble” might be very, very hard to destroy, astronomers say

Although a common premise in science fiction, the prospect of a large asteroid smashing into Earth is not fiction at all, but rather a guarantee. Extinction-event asteroids are a periodic occurrence, just like the tides or the full moon; just ask the dinosaurs. That’s why the National Aeronautics and Space Administration (NASA) spent so much …

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1.2 million-year-old ‘workshop’ found in Ethiopia: Study

Archaeologists excavating at Melka Kunture uncovered almost 600 obsidian stone tools and identified the oldest known “workshop,” study says. Photo from the Italo-Spanish archaeological mission at Melka Kunture A tan cliff stretching through a valley in Ethiopia contained a collection of black stones that were much more than just rocks, researchers found. [–> Archaeologists noticed …

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New time lapse video shows 12 years of exoplanets orbiting their star

Credit: Northwestern University In 2008, HR8799 was the first extrasolar planetary system ever directly imaged. Now, the famous system stars in its very own video. Using observations collected over the past 12 years, Northwestern University astrophysicist Jason Wang has assembled a stunning time lapse video of the family of four planets—each more massive than Jupiter—orbiting …

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Embers of an Ancient Inferno Pinpoint the Worst Extinction in Earth’s History : ScienceAlert

The link between ancient volcanic eruptions and the most severe extinction event the world has ever seen just got even stronger. A new analysis of mercury isotopes have provided evidence that a quarter of a billion years ago, far-flung places in Earth’s Southern Hemisphere were blanketed with debris from volcanic eruptions in Siberia. The so-called …

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Did the Seeds of Life Ride to Earth Inside an Asteroid?

Nearly a hundred different types of amino acids have been observed in meteorites, but only a dozen of the 20 that are essential for life have been found. Biological amino acids also have a peculiarity that gives them away: They all have a “left-handed” structure, whereas abiotic processes create left- and right-handed molecules in equal …

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Mars helicopter Ingenuity soars over rover tracks on 41st flight

NASA’s small Ingenuity helicopter notched its 41st flight. The Ingenuity drone made a quick flight out of its resting stop and then back again on Jan. 27, covering 600 feet (183 meters) in horizontal distance in just 109 seconds. After the dust settled in Jezero Crater, Ingenuity returned to its resting area at “Airfield Beta,” …

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‘Mysterious flying spiral’ above Hawaii likely caused by SpaceX launch : NPR

A Japanese telescope captured images and video of a flying blue whirlpool shape over Hawaii on Jan. 18. “The Subaru-Asahi Star Camera captured a mysterious flying spiral over Maunakea, Hawaii” which “seems to be related to the SpaceX company’s launch of a new satellite,” the Subaru Telescope tweeted on Jan. 19. The telescope is mounted …

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A Mysterious Whirlpool Appeared Over Hawaii, And It Could Be Because of SpaceX : ScienceAlert

A ghostly blue spiral spotted in the sky over Hawaii could be related to a SpaceX satellite launch. The National Astronomical Observatory of Japan spotted the mysterious spiral through its Subaru Telescope on January 18just after SpaceX launched a Falcon 9 rocket carrying a large military satellite for the US Space Force. Ichi Tanaka, a …

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