Science

Why do some comets glow green? | Science

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Country: Country *AfghanistanAland IslandsAlbaniaAlgeriaAndorraAngolaAnguillaAntarcticaAntigua and BarbudaArgentinaArmeniaArubaAustraliaAustriaAzerbaijanBahamasBahrainBangladeshBarbadosBelarusBelgiumBelizeBeninBermudaBhutanBolivia, Plurinational State ofBonaire, Sint Eustatius and SabaBosnia and HerzegovinaBotswanaBouvet IslandBrazilBritish Indian Ocean TerritoryBrunei DarussalamBulgariaBurkina FasoBurundiCambodiaCameroonCanadaCape VerdeCayman IslandsCentral African RepublicChadChileChinaChristmas IslandCocos (Keeling) IslandsColombiaComorosCongoCongo, The Democratic Republic of theCook IslandsCosta RicaCote D’IvoireCroatiaCubaCuraçaoCyprusCzech RepublicDenmarkDjiboutiDominicaDominican RepublicEcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEthiopiaFalkland Islands (Malvinas)Faroe IslandsFijiFinlandFranceFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabonGambiaGeorgiaGermanyGhanaGibraltarGreeceGreenlandGrenadaGuadeloupeGuatemalaGuernseyGuineaGuinea-BissauGuyanaHaitiHeard Island and Mcdonald IslandsHoly See (Vatican City State)HondurasHong … Read more

Bits of asteroid Ryugu are among ‘most primordial’ materials ever examined

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Tiny particles of rock gathered from the asteroid Ryugu are some of the most primordial bits of material ever examined on Earth and could give us a glimpse into the origins of the solar system. Asteroid 162173 Ryugu measures about 2,953 feet (900 meters) in diameter and orbits the sun between Earth and Mars, occasionally … Read more

The Biden Administration Should Offer Free, At-Home COVID testing

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A few days ago, New York Mayor Bill de Blasio announced that the city would provide 500,000 free at-home COVID tests to city residents through community centers. This step toward more equitable testing came days after a heated exchange between White House spokesperson Jen Psaki and a National Public Radio reporter in which Psaki scoffed … Read more

NASA’s Artemis 1 moon mission slips to spring 2022 after engine issue

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Rocket woes have again delayed NASA’s return to the moon. The agency is now targeting a launch in March or April 2022 for its Artemis 1 flight, an uncrewed mission around the moon and the first flight of its massive Space Launch System (SLS) rocket. NASA was previously targeting Feb. 12, 2022, for the flight, … Read more

You can watch SpaceX launch NASA supplies to space station early Tuesday

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CAPE CANAVERAL, Fla. — SpaceX will launch a Dragon spacecraft packed with NASA cargo to the International Space Station early Tuesday (Dec. 21) as part of its latest resupply mission for the U.S. space agency and you can watch it live. A shiny new SpaceX Falcon 9 rocket will take to the skies here from … Read more

Welfare: Children’s brains are bigger if they receive more generous benefits

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The size of a child’s hippocampus can be limited by stress, and US state welfare schemes that give families $500 a month or more are linked to a reduction in this association Humans 20 December 2021 By Jason Arunn Murugesu Illustration of the hippocampus in a child’s brain Science Photo Library / Alamy Higher payments … Read more

Best beginner cameras | Space

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There are hundreds of options available when it comes to the best beginner cameras. Plenty of models now offer a combination of ease of use and high-specification features, along with flexible shooting modes and a low price. It can feel a little overwhelming to navigate all the brands and model numbers though, which is where … Read more

Canary Islands Eruption Resets Volcano Forecasts

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Christopher Intagliata: For three months now, the Cumbre Vieja volcano has unleashed fury upon the island of La Palma, in the Spanish Canary Islands. Ash has rained from the sky. Rivers of lava have consumed at least 2600 buildings, and razed plantations of bananas and avocados. The magma’s movement underground has triggered clusters of earthquakes … Read more

Antarctica: Remarkable trove of species found living beneath ice shelf

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The variety of species found below an Antarctic ice shelf shows that life can survive in hostile, food-poor environments for thousands of years Environment 20 December 2021 By Adam Vaughan Hot water drilling in Antarctica Sophie Berger/AWI An astonishing variety of marine life has been discovered in the freezing darkness hundreds of metres below Antarctica’s … Read more

Asteroid Ryugu: Space rock sample brought to Earth has a strange dark colour

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Last year, Japan’s Hayabusa 2 asteroid explorer returned samples from the asteroid Ryugu, and now the first analysis of the rock shows it has a primitive composition and a curiously dark colour Space 20 December 2021 By Alex Wilkins Artist’s impression of Hayabusa 2 near Ryugu Akihiro Ikeshita The asteroid Ryugu contains some of the … Read more