Space
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We summarize the week's scientific breakthroughs every Thursday.
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SpaceAstronomers have found the edge of the Milky Way at last
Computer simulations and observations of nearby galaxies let astrophysicists put a firm number on the Milky Way's size.
By Ken Croswell -
PhysicsNew telescopes could help spot ‘photon ring’ of the first black hole ever imaged
Expanding the Event Horizon Telescope by adding telescopes in space could help capture the rings around galaxy M87’s supermassive black hole.
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PhysicsHow slime mold helped scientists map out the cosmic web
Tapping a similarity between a slime mold’s lacy web and the vast threads of matter that connect galaxies, astronomers visualized the cosmic web.
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Planetary ScienceThe asteroid Ryugu has a texture like freeze-dried coffee
Only about half of the asteroid Ryugu is rock; the rest is airy holes, a finding that could help reveal details of how the planets formed.
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Planetary ScienceCoronavirus and technical issues delay a Mars mission’s launch
The joint European-Russian ExoMars rover’s launch was postponed from July to 2022 so technicians could resolve issues with the landing equipment.
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AstronomyThe star Betelgeuse might just be dusty, not about to explode
A new study suggests that dust recently expelled by Betelgeuse is why the star dimmed suddenly in late 2019 before brightening again.
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SpaceNew fleets of private satellites are clogging the night sky
As private companies launch dozens of satellites at a time, researchers are assessing the impact on ground-based telescopes.
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AstronomyHeavy metal may rain from the skies of planet WASP 76b
Astronomers saw hints of iron rain on an ultrahot gas giant, an exoplanet where starlike atmospheric temperatures drive weird weather.
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Planetary ScienceSome ‘superpuff’ exoplanets may actually be ringed worlds like Saturn
“Superpuff” planets look fluffy and light. But for some of the worlds, the effect could instead be explained by large, rocky rings, a study suggests.
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Planetary ScienceMeet Perseverance, NASA’s newest Mars rover
NASA’s next Mars rover will be called Perseverance.
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SpaceCecilia Payne-Gaposchkin revealed stars’ composition and broke gender barriers
The book ‘What Stars Are Made Of’ celebrates the life of astronomer Cecilia Payne-Gaposchkin.
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SpaceA black hole eruption marks the most powerful explosion ever spotted
Hundreds of millions of years ago, a black hole blasted out roughly 100 billion times as much energy as the sun is expected to emit in its lifetime.