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Categories: Paleontology: Fossils, Space: The Solar System

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Space: Exploration Space: General Space: The Solar System
Published

Marsquakes may help reveal whether liquid water exists underground on red planet      (via sciencedaily.com)     Original source 

If liquid water exists today on Mars, it may be too deep underground to detect with traditional methods used on Earth. But listening to earthquakes that occur on Mars -- or marsquakes -- could offer a new tool in the search.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

First of its kind detection made in striking new Webb image      (via sciencedaily.com)     Original source 

For the first time, a phenomenon astronomers have long hoped to directly image has been captured by NASA's James Webb Space Telescope's Near-Infrared Camera (NIRCam). In this stunning image of the Serpens Nebula, the discovery lies in the northern area of this young, nearby star-forming region.

Offbeat: General Offbeat: Space Space: Exploration Space: General Space: The Solar System
Published

Geologists expect Chang'e-6 lunar surface samples to contain volcanic rock and impact ejecta      (via sciencedaily.com)     Original source 

On June 25, China's Chang'e-6 (CE-6) lunar probe is set to return to Earth, carrying the first surface samples collected from the farside of the Moon. In anticipation of this historic event, scientists are publishing their predictions for the unique materials that may be found in the CE-6 samples.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

Star clusters observed within a galaxy in the early Universe      (via sciencedaily.com)     Original source 

The history of how stars and galaxies came to be and evolved into the present day remains among the most challenging astrophysical questions to solve yet, but new research brings us closer to understanding it. New insights about young galaxies during the Epoch of Reionization have been revealed. Observations with the James Webb Space Telescope (JWST) of the galaxy Cosmic Gems arc (SPT0615-JD) have confirmed that the light of the galaxy was emitted 460 million years after the big bang. What makes this galaxy unique is that it is magnified through an effect called gravitational lensing, which has not been observed in other galaxies formed during that age.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: The Solar System
Published

Iron meteorites hint that our infant solar system was more doughnut than dartboard      (via sciencedaily.com)     Original source 

Iron meteorites are remnants of the metallic cores of the earliest asteroids in our solar system. Iron meteorites contain refractory metals, such as iridium and platinum, that formed near the sun but were transported to the outer solar system. New research shows that for this to have happened, the protoplanetary disk of our solar system had to have been doughnut-shaped because the refractory metals could not have crossed the large gaps in a target-shaped disk of concentric rings. The paper suggests that the refractory metals moved outward as the protoplanetary disk rapidly expanded, and were trapped in the outer solar system by Jupiter.

Offbeat: General Offbeat: Space Space: General Space: The Solar System
Published

Titan's lakes may be shaped by waves      (via sciencedaily.com)     Original source 

Geologists studied Titan's shorelines and showed through simulations that coastlines of the moon's methane- and ethane-filled seas have likely been shaped by waves. Until now, scientists have found indirect and conflicting signs of wave activity, based on Cassini images of Titan's surface.

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: The Solar System
Published

Jupiter's great red spot is not the same one Cassini observed in 1600s      (via sciencedaily.com)     Original source 

Jupiter's iconic Great Red Spot has persisted for at least 190 years and is likely a different spot from the one observed by the astronomer Giovanni Domenico Cassini in 1665, a new study reports. The Great Red Spot we see today likely formed because of an instability in the planet's intense atmospheric winds, producing a long, persistent atmospheric cell, the study also finds.

Anthropology: General Biology: Evolutionary Biology: Marine Biology: Zoology Ecology: Extinction Ecology: Sea Life Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Dinosaurs Paleontology: Fossils Paleontology: General
Published

Ancient polar sea reptile fossil is oldest ever found in Southern Hemisphere      (via sciencedaily.com)     Original source 

An international team of scientists has identified the oldest fossil of a sea-going reptile from the Southern Hemisphere -- a nothosaur vertebra found on New Zealand's South Island. 246 million years ago, at the beginning of the Age of Dinosaurs, New Zealand was located on the southern polar coast of a vast super-ocean called Panthalassa. 'The nothosaur found in New Zealand is over 40 million years older than the previously oldest known sauropterygian fossils from the Southern Hemisphere.

Biology: General Ecology: Extinction Ecology: Nature Ecology: Research Ecology: Sea Life Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Fossils Paleontology: General
Published

Sharks have depleted functional diversity compared to the last 66 million years      (via sciencedaily.com)     Original source 

New research has found that sharks retained high levels of functional diversity for most of the last 66 million years, before steadily declining over the last 10 million years to its lowest value in the present day.

Offbeat: General Offbeat: Space Space: Astronomy Space: General Space: Structures and Features Space: The Solar System
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Watery planets orbiting dead stars may be good candidates for studying life -- if they can survive long enough      (via sciencedaily.com)     Original source 

The small footprint and dim light of white dwarfs, remnants of stars that have burned through their fuel, may make excellent backdrops for studying planets with enough water to harbor life. The trick is spotting the shadow of a planet against a former star that has withered to a fraction of its size and finding that it's a planet that has kept its water oceans for billions of years even after riding out the star's explosive and violent final throes. A new study of the dynamics of white dwarf systems suggests that, in theory, some watery planets may indeed thread the celestial needles necessary to await discovery and closer scrutiny.

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: Structures and Features Space: The Solar System
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Mysterious mini-Neptunes      (via sciencedaily.com)     Original source 

This study discovered mini-Neptunes around four red dwarfs using observations from a global network of ground-based telescopes and the TESS space telescope. These four mini-Neptunes are close to their parent stars, and the three of them are likely to be in eccentric orbits.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography Paleontology: Climate Paleontology: Fossils Paleontology: General
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Ancient ocean slowdown warns of future climate chaos      (via sciencedaily.com)     Original source 

When it comes to the ocean's response to global warming, we're not in entirely uncharted waters. A new study shows that episodes of extreme heat in Earth's past caused the exchange of waters from the surface to the deep ocean to decline.

Biology: General Biology: Marine Biology: Zoology Ecology: Sea Life Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Fossils Paleontology: General
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No bones about it: 100-million-year-old bones reveal new species of pterosaur      (via sciencedaily.com)     Original source 

New research has identified 100-million-year-old fossilized bones discovered in western Queensland as belonging to a newly identified species of pterosaur, which was a formidable flying reptile that lived among the dinosaurs.

Space: Astronomy Space: Exploration Space: General Space: The Solar System
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New biomarker database designed to improve astronaut health may also be useful to earthlings      (via sciencedaily.com)     Original source 

As space travel becomes more frequent, a new biomarker tool was developed by an international team of researchers to help improve the growing field of aerospace medicine and the health of astronauts.

Anthropology: General Biology: Biochemistry Biology: Cell Biology Biology: General Biology: Microbiology Environmental: General Geoscience: Earth Science Geoscience: Geochemistry Offbeat: Earth and Climate Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Fossils
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Scientists unlock secrets of how archaea, the third domain of life, makes energy      (via sciencedaily.com)     Original source 

An international scientific team has redefined our understanding of archaea, a microbial ancestor to humans from two billion years ago, by showing how they use hydrogen gas. The findings explain how these tiny lifeforms make energy by consuming and producing hydrogen. This simple but dependable strategy has allowed them to thrive in some of Earth's most hostile environments for billions of years.

Offbeat: General Offbeat: Space Space: Astronomy Space: Exploration Space: General Space: The Solar System
Published

Would astronauts' kidneys survive a roundtrip to Mars?      (via sciencedaily.com)     Original source 

The structure and function of the kidneys is altered by space flight, with galactic radiation causing permanent damage that would jeopardise any mission to Mars, according to a new study led by researchers from UCL.