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NASA's Hubble spies spiral's edge
المصدر: Phys.org - latest science and technology news stories · نُشر
This NASA Hubble Space Telescope image features the edge-on, intermediate spiral galaxy NGC 1827, located roughly 37 million light-years away in the constellation Columba, the Dove. Hubble captured the image as part of a survey looking at 260 satellite galaxies around 22 Milky Wa
This NASA Hubble Space Telescope image features the edge-on, intermediate spiral galaxy NGC 1827, located roughly 37 million light-years away in the constellation Columba, the Dove. Hubble captured the image as part of a survey looking at 260 satellite galaxies around 22 Milky Way–like host galaxies within a radius of about 32 million light-years from Earth. Hubble has already observed 111 of these satellite galaxies.
The remaining galaxies will take an additional 149 Hubble orbits, one orbit for each galaxy, to observe.
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World-record intensity in attosecond hard-X-ray pulses could unlock closer study of electrons in atoms and molecules
Researchers used the European XFEL to create X-ray flashes that were not only extremely short but also reached record intensity for this type of pulse. The researchers focused the X-rays to an area roughly 100,000 times smaller than the cross section of a typical human hair. This
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Automated essay assessment can grade writing more accurately across topics, study finds
An artificial intelligence (AI) model can score English essays with improved accuracy across different writing topics, according to work published in the International Journal of Continuing Engineering Education and Life-Long Learning. The tool could help schools assess student w
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Spiny dogfish blood contains a hormone long thought absent in sharks
Cortisol is a hormone that helps humans and many other animals regulate their energy use and respond to changing conditions. For a long time, sharks and rays were believed to rely on a different steroid hormone for these functions, without producing cortisol themselves. Now, a ne
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Maxwell's demon learns to turn concealed information into usable energy for microscopic systems
Since its introduction more than 150 years ago, the thought-provoking idea of Maxwell's demon has profoundly shaped our understanding of the relationship between information and energy. Maxwell's demon is an imagined microscopic gatekeeper that exploits information at the microsc
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Replanted landscapes can look restored while soil fungi still lag behind
With up to 75% of the world's soils degraded, restoration projects try to reestablish functional and biodiverse environments to secure adequate food production, biodiversity, climate regulation and human well-being.
Phys.org - latest science and technology news stories ·