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☆ An amateur astronomer caught one of the brightest fireballs ever seen on Jupiter. Watch the rare video footage.
▼ + stars: | 2023-09-23 | by ( Maiya Focht | Morgan Mcfall-Johnsen | ) www.businessinsider.com time to read: +4 min

About 14 seconds into the video below, you can see a bright flash appear in Jupiter's southern hemisphere. AdvertisementAdvertisementOne of the brightest, biggest Jupiter fireballs ever recordedKo Arimatsu, an astronomer at Kyoto University, confirmed to The New York Times that there were six reports of this flash on August 28. AdvertisementAdvertisementA fragment of the Shoemaker-Levy 9 comet impacts Jupiter’s night side in 1994. Jupiter is the 'vacuum cleaner of the solar system'As the largest planet in our solar system, by far, Jupiter has a powerful gravity that pulls in comets and asteroids. In fact, Jupiter's appetite for asteroids and comets has earned it the nickname "vacuum cleaner of the solar system," according to NASA.

Persons: Tadao Ohsugi, It's, Arimatsu, Shoemaker, Levy, Peter Vereš, NASA's OSIRIS, NASA's, Leigh Fletcher Organizations: Service, Kyoto University, The New York Times, TNT, NASA, ESA, Space Science Institute, Jupiter, JPL Arimatsu, Center for Astrophysics, Harvard & Smithsonian, NASA's Goddard Space Flight, University of Arizona, University of Leicester, Times Locations: Wall, Silicon, Japan, Boulder, Colo, Siberia

Others can trigger global extinctions,But how big of an asteroid does it take to damage cities, states, countries, and the planet? Sign up for our newsletter to get the latest on the culture & business of sustainability — delivered weekly to your inbox. Some angry space rocks, like the recent Chelyabinsk meteorite that exploded over Russia, are big enough to shatter windows and crumble walls. A handful can trigger global extinctions, like the asteroid that smashed into Mexico's Yucatan Peninsula 66 million years ago. But how big of an asteroid does it take to damage cities, states, countries, and the planet?

☆ A 1960s-era cannon is 'kicking ass' against Russia's drones, but the country that makes ammo for it won't send more to Ukraine
▼ + stars: | 2023-04-19 | by ( Benjamin Brimelow | ) www.businessinsider.com time to read: +10 min

But Switzerland, where Gepard ammo is made, is not allowing more of that ammo to be sent to Ukraine. The Gepard SPAAGA German Gepard anti-aircraft tank during an exercise near Munster in June 2007. German defense company Krauss-Maffei Wegmann built 570 Gepards between 1963 and 1980 — 420 for the German Bundeswehr, 95 for the Dutch army, and 55 for the Belgian army. Kay Nietfeld/picture alliance via Getty ImagesAfter being criticized for its reluctance to send heavy weaponry to Ukraine, the German government promised some 50 Gepards to Ukraine in April 2022. In February, German Defense Minister Boris Pistorius announced that German firm Rheinmetall would restart ammo production for the Gepard.

☆ Ancient anti-aircraft guns are taking on a new mission amid Russia's war in Ukraine
▼ + stars: | 2022-11-23 | by ( Michael Peck | ) www.businessinsider.com time to read: +7 min

Russia and Ukraine have both turned to older anti-aircraft guns to bolster their air defenses. During World War II, half of the Allied bombers shot down over Germany may have victims of "flak" — a shortened version of a German word for 1930s-era anti-aircraft guns. SERGEY BOBOK/AFP via Getty ImagesRussia and Ukraine are both using Soviet-made S-60 anti-aircraft guns that date to the 1940s. Older anti-aircraft guns also offer a political advantage. Even as more sophisticated anti-aircraft weapons have been deployed, anti-aircraft guns have remained useful, albeit in more limited roles.

A DART view of the Dimorphos asteroid right before impact. NASA via YouTubeThe DART spacecraft, which is about the size of a vending machine, crashed into Dimorphos at 7:14 p.m. "Oh my goodness," said Elena Adams, a DART mission systems engineer at the Johns Hopkins University Applied Physics Laboratory. The DART mission is functioning as a proof of concept of asteroid deflection as a planetary defense strategy. Betts said he hopes the DART mission will continue to raise awareness about the importance of planetary defense.

☆ Ziua Internațională a Asteroizilor. Vezi curiozități despre aceștia, dar și cine este moldoveanul care a descoperit 10 asteroizi
▼ + stars: | 2021-06-30 | by ( Onixmedia Srl | ) diez.md time to read: +4 min

Vezi curiozități despre aceștia, dar și cine este moldoveanul care a descoperit 10 asteroiziOrganizația Națiunilor Unite (ONU), în 2016, a stabilit oficial că Ziua Internațională a Asteroizilor, propusă de Brian May, chitaristul trupei Queen, să fie sărbătorită în fiecare an pe 30 iunie. Asteroid Day este o inițiativă internațională care își propune să informeze și să educe publicul despre riscurile generate de asteroizi și modalitățile de protejare. Astronomul originar din Chișinău care a descoperit 10 asteroizi. Mai mulți ani, a fost cercetătorul științific principal al acestui observator, iar la sfârșitul vieții a îndeplinit și funcții de conducere. Pe lângă faptul ca este primul asteroid descoperit, Ceres este si cel mai mare asteroid cunoscut , de cca.

Persons: Brian May, Queen, Vladimir Albițki, Vladimir, Grigori Neuimin, Giuseppe Piazzi, William Herschel Organizations: Ziua Internațională, Organizația Națiunilor Unite, ONU, Ziua, Tunguska, Universității din, Ceres Locations: Tunguska, Siberia, Chișinău, sovietic, Universității din Moscova, Odesa, Simeiz, Chelyabinsk, Rusia

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