(Phys.org) -- Results from an expedition to far eastern Russia that set out to find the origin of naturally occurring quasicrystals have provided convincing evidence that they arrived on Earth from outer space.
Condensed Matter
Aug 9, 2012
7
0
For a billion years, single-celled eukaryotes ruled the planet. Then around 700 million years ago during Snowball Earth—a geologic era when glaciers may have stretched as far as the Equator—a new creature burst into existence: ...
Evolution
Jun 27, 2024
0
9
Neutron stars are the end products of massive stars and gather together a large part of the original stellar mass in a super-dense star with a diameter of only around ten kilometers. On 17 August 2017, researchers observed ...
Astronomy
Dec 21, 2023
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373
RR Lyrae stars are old, pulsating stars that burn helium in their cores for fuel. Their progenitors were similar to our sun, but they are now much larger and brighter than our sun. We know of hundreds of thousands of RR Lyrae ...
Astronomy
Sep 7, 2023
0
105
Due to intensifying sea-ice melting in the Arctic, sunlight is now penetrating deeper and deeper into the ocean. Since marine zooplankton respond to the available light, this is also changing their behavior—especially how ...
Plants & Animals
Aug 28, 2023
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6
Aotearoa New Zealand's largest fault, the Hikurangi Subduction Zone (HSZ), is where the Pacific tectonic plate dives west beneath the Australian plate and underneath the east coast of the North Island.
Earth Sciences
Aug 17, 2023
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46
A subpolar species associated with Atlantic water expanded far into the Arctic Ocean during the Last Interglacial, analysis of microfossil content of sediment cores reveals. This implies that summers in the Arctic were ice ...
Ecology
Aug 4, 2023
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410
Detailed analysis of data obtained by the Zhurong rover of dunes located on the southern Utopia Planitia of Mars suggests the planet underwent a major shift in climate that accompanied changes in prevailing winds. This shift ...
Planetary Sciences
Jul 5, 2023
0
12
To better understand observations of the most distant galaxies, an international team of astronomers has built a sample of local galaxies which can be studied in much higher detail. In a newly published study they show how ...
Astronomy
May 10, 2023
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274
A "beautiful effect" predicted by quantum electrodynamics (QED) can explain the puzzling first observations of polarized X-rays emitted by a magnetar—a neutron star featuring a powerful magnetic field, according to a Cornell ...
Astronomy
May 4, 2023
0
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