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Categories: Offbeat: Space, Paleontology: Dinosaurs

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Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: Structures and Features
Published

Footprints of galactic immigration uncovered in Andromeda galaxy      (via sciencedaily.com) 

Astronomers have uncovered striking new evidence for a mass migration of stars into the Andromeda Galaxy. Intricate patterns in the motions of stars reveal an immigration history very similar to that of the Milky Way.

Offbeat: Space Space: Astrophysics Space: Exploration
Published

A star is born: Study reveals complex chemistry inside 'stellar nurseries'      (via sciencedaily.com) 

The universe's carbon atoms complete a journey that spans eons -- forming in the hearts of dying stars, then becoming a part of planets and even living organisms. Now, a team has uncovered the chemistry behind one tiny, but critical, step in this process.

Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: Structures and Features
Published

Star formation in distant galaxies by the James Webb Space Telescope      (via sciencedaily.com) 

Thanks to the James Webb Space Telescope's first images of galaxy clusters, researchers have, for the very first time, been able to examine very compact structures of star clusters inside galaxies, so-called clumps.

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

Hubble directly measures mass of a lone white dwarf      (via sciencedaily.com) 

Astronomers have directly measured the mass of a single, isolated white dwarf -- the surviving core of a burned-out, Sun-like star. Researchers found that the white dwarf is 56 percent the mass of our Sun. This agrees with earlier theoretical predictions of the white dwarf's mass and corroborates current theories of how white dwarfs evolve as the end product of a typical star's evolution. The unique observation yields insights into theories of the structure and composition of white dwarfs.

Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: Structures and Features
Published

Astronomers uncover a one-in-ten-billion binary star system: Kilonova progenitor system      (via sciencedaily.com) 

Astronomers using data from the SMARTS 1.5-meter Telescope at the Cerro Tololo Inter-American Observatory (CTIO), have made the first confirmed detection of a star system that will one day form a kilonova -- the ultra-powerful, gold-producing explosion created by merging neutron stars. These systems are so phenomenally rare that only about 10 such systems are thought to exist in the entire Milky Way.

Offbeat: Space Space: Astrophysics Space: Cosmology Space: Structures and Features
Published

The bubbling universe: A previously unknown phase transition in the early universe      (via sciencedaily.com) 

What happened shortly after the universe was born in the Big Bang and began to expand? Bubbles occurred and a previously unknown phase transition happened, according to particle physicists.

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

Researchers complete first real-world study of Martian helicopter dust dynamics      (via sciencedaily.com) 

Researchers have completed the first real-world study of Martian dust dynamics based on Ingenuity's historic first flights on the Red Planet, paving the way for future extraterrestrial rotorcraft missions. The work could support NASA's Mars Sample Return Program, which will retrieve samples collected by Perseverance, or the Dragonfly mission that will set course for Titan, Saturn's largest moon, in 2027.

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

Evidence that Saturn's moon Mimas is a stealth ocean world      (via sciencedaily.com) 

When a scientist discovered surprising evidence that Saturn's smallest, innermost moon could generate the right amount of heat to support a liquid internal ocean, colleagues began studying Mimas' surface to understand how its interior may have evolved. Numerical simulations of the moon's Herschel impact basin, the most striking feature on its heavily cratered surface, determined that the basin's structure and the lack of tectonics on Mimas are compatible with a thinning ice shell and geologically young ocean.

Computer Science: General Offbeat: Computers and Math Offbeat: Space Space: Exploration Space: The Solar System
Published

Will machine learning help us find extraterrestrial life?      (via sciencedaily.com) 

Researchers have applied a deep learning technique to a previously studied dataset of nearby stars and uncovered eight previously unidentified signals of interest.

Offbeat: Space Space: Astronomy Space: Exploration Space: Structures and Features
Published

Volcano-like rupture could have caused magnetar slowdown      (via sciencedaily.com) 

In October 2020, a highly magnetic neutron star called SGR 1935+2154 abruptly began spinning more slowly. Astrophysicist now show the magnetar's rotational slowdown could have been caused by a volcano-like rupture near its magnetic pole.

Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: Structures and Features
Published

Starry tail tells the tale of dwarf galaxy evolution      (via sciencedaily.com) 

A giant diffuse tail of stars has been discovered emanating from a large, faint dwarf galaxy. The presence of a tail indicates that the galaxy has experienced recent interaction with another galaxy. This is an important clue for understanding how so called 'ultra-diffuse' galaxies are formed.

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

Solar System formed from 'poorly mixed cake batter,' isotope research shows      (via sciencedaily.com) 

Earth's potassium arrived by meteoritic delivery service finds new research led by Earth and planetary scientists. Their work shows that some primitive meteorites contain a different mix of potassium isotopes than those found in other, more-chemically processed meteorites. These results can help elucidate the processes that shaped our Solar System and determined the composition of its planets.

Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: Structures and Features
Published

NASA's Fermi detects first gamma-ray eclipses from 'spider' star systems      (via sciencedaily.com) 

Scientists have discovered the first gamma-ray eclipses from a special type of binary star system using data from NASA's Fermi Gamma-ray Space Telescope. These so-called spider systems each contain a pulsar -- the superdense, rapidly rotating remains of a star that exploded in a supernova -- that slowly erodes its companion.

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

Webb spies Chariklo ring system with high-precision technique      (via sciencedaily.com) 

In an observational feat of high precision, scientists used a new technique with NASA's James Webb Space Telescope to capture the shadows of starlight cast by the thin rings of Chariklo. Chariklo is an icy, small body, but the largest of the known Centaur population, located more than 2 billion miles away beyond the orbit of Saturn.

Energy: Technology Offbeat: Space
Published

Plasma thrusters used on satellites could be much more powerful      (via sciencedaily.com)     Original source 

It was believed that Hall thrusters, an efficient kind of electric propulsion widely used in orbit, need to be large to produce a lot of thrust. Now, a new study suggests that smaller Hall thrusters can generate much more thrust -- potentially making them candidates for interplanetary missions.

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

How a 3 cm glass sphere could help scientists understand space weather      (via sciencedaily.com) 

Space weather can interfere with spaceflight and the operation of satellites, but the phenomenon is very difficult to study on Earth because of the difference in gravity. Researchers effectively reproduced the type of gravity that exists on or near stars and other planets inside of a glass sphere measuring 3 centimeters in diameter, or about 1.2 inches. The achievement could help scientists overcome the limiting role of gravity in experiments that are intended to model conditions in stars and other planets.

Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Dinosaurs Paleontology: Early Mammals and Birds Paleontology: General
Published

Researchers uncover 92 fossil nests belonging to some of India's largest dinosaurs      (via sciencedaily.com) 

The discovery of more than 250 fossilized eggs reveals intimate details about the lives of titanosaurs in the Indian subcontinent, according to a new study.

Ecology: Extinction Offbeat: Paleontology and Archeology Paleontology: Dinosaurs Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

Fossils reveal dinosaurs of prehistoric Patagonia      (via sciencedaily.com)     Original source 

A study is providing a glimpse into dinosaur and bird diversity in Patagonia during the Late Cretaceous, just before the non-avian dinosaurs went extinct. The fossils represent the first record of theropods -- a dinosaur group that includes both modern birds and their closest non-avian dinosaur relatives -- from the Chilean portion of Patagonia. The researchers' finds include giant megaraptors with large sickle-like claws and birds similar to todays ducks and geese.

Offbeat: Paleontology and Archeology Paleontology: Dinosaurs Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

The other paleo diet: Rare discovery of dinosaur remains preserved with its last meal      (via sciencedaily.com) 

Microraptor was an opportunistic predator, feeding on fish, birds, lizards -- and now small mammals. The discovery of a rare fossil reveals the creature was a generalist carnivore in the ancient ecosystem of dinosaurs.

Paleontology: Dinosaurs Paleontology: Fossils Paleontology: General
Published

What the inner ear of Europasaurus reveals about its life      (via sciencedaily.com) 

Europasaurus is a long-necked, herbivorous dinosaur that lived in the Late Jurassic, about 154 million years ago, on a small island in modern-day Germany. Recently, scientists examined fossil braincase material of Europasaurus with the aid of micro-computed tomography (micro-CT). The digital reconstruction of the inner ear of Europasaurus gave the researchers new insights not only into its hearing ability, but also into its reproductive and social behavior.