Showing 20 articles starting at article 821

< Previous 20 articles        Next 20 articles >

Categories: Paleontology: Fossils, Space: General

Return to the site home page

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

The search for habitable planets expands      (via sciencedaily.com)     Original source 

Astronomers are suggesting a new way to expand the search for habitable planets that takes into account a zone not previously considered: the space between the star and what's called soot-line in planet-forming disks.

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

Astronomers discover a key planetary system to understand the formation mechanism of the mysterious 'super-Earths'      (via sciencedaily.com)     Original source 

A study presents the detection of a system of two planets slightly larger than Earth orbiting a cold star in a synchronized dance. Named TOI-2096, the system is located 150 light-years from Earth. This system, located 150 light-years from Earth, is one of the best candidates for a detailed study of their atmosphere with the JWST space telescope.

Space: General Space: Structures and Features Space: The Solar System
Published

New study provides novel insights into the cosmic evolution of amino acids      (via sciencedaily.com)     Original source 

All biological amino acids on Earth appear exclusively in their left-handed form, but the reason underlying this observation is elusive. Recently, scientists uncovered new clues about the cosmic origin of this asymmetry. Based on the optical properties of amino acids found on the Murchison meteorite, they conducted physics-based simulations, revealing that the precursors to the biological amino acids may have determined the amino acid chirality during the early phase of galactic evolution.

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

Helium nuclei research advances our understanding of cosmic ray origin and propagation      (via sciencedaily.com)     Original source 

The latest observations from Low Earth Orbit with the International Space Station provide further evidence of spectral hardening and softening of cosmic ray particles.

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

A deep underground lab could hold key to habitability on Mars      (via sciencedaily.com)     Original source 

Tunnels deep underground in North Yorkshire are providing a unique opportunity to study how humans might be able to live and operate on the Moon or on Mars.

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

NASA's Hubble hunts for intermediate-sized black hole close to home      (via sciencedaily.com)     Original source 

Astronomers have come up with what they say is some of their best evidence yet for the presence of a rare class of 'intermediate-sized' black hole that may be lurking in the heart of the closest globular star cluster to Earth, located 6,000 light-years away.

Space: Astrophysics Space: General Space: Structures and Features
Published

Element creation in the lab deepens understanding of surface explosions on neutron stars      (via sciencedaily.com)     Original source 

Scientists working in the lab have produced a signature nuclear reaction that occurs on the surface of a neutron star gobbling mass from a companion star. Their achievement improves understanding of stellar processes generating diverse nuclear isotopes.

Chemistry: General Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geology Geoscience: Severe Weather Geoscience: Volcanoes Space: Exploration Space: General
Published

Eruption of Tonga underwater volcano found to disrupt satellite signals halfway around the world      (via sciencedaily.com)     Original source 

Researchers found that the Hunga-Tonga eruption was associated with the formation of an equatorial plasma bubble in the ionosphere, a phenomenon associated with disruption of satellite-based communications. Their findings also suggest that a long-held atmospheric model should be revised.

Biology: Biochemistry Ecology: Animals Ecology: Endangered Species Ecology: Extinction Ecology: Nature Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

Fossils of a saber-toothed top predator reveal a scramble for dominance leading up to 'the Great Dying'      (via sciencedaily.com)     Original source 

A tiger-sized saber-toothed creature called Inostrancevia has previously only been found in Russia. But scientists have discovered its fossils in South Africa, suggesting that it migrated 7,000 miles across the supercontinent Pangaea during the world's worst mass extinction 252 million years ago. Heading to South Africa allowed it to fill a gap in a faraway ecosystem that had lost its top predators.

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

An X-ray look at the heart of powerful quasars      (via sciencedaily.com)     Original source 

Researchers have observed the X-ray emission of the most luminous quasar seen in the last 9 billion years of cosmic history, known as SMSS J114447.77-430859.3, or J1144 for short. The new perspective sheds light on the inner workings of quasars and how they interact with their environment.

Anthropology: Cultures Archaeology: General Environmental: Ecosystems Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Paleontology: Climate Paleontology: Fossils
Published

Ancient climate change solves mystery of vanished South African lakes      (via sciencedaily.com)     Original source 

New evidence for the presence of ancient lakes in some of the most arid regions of South Africa suggests that Stone Age humans may have been more widespread across the continent than previously thought.

Anthropology: Cultures Anthropology: Early Humans Anthropology: General Archaeology: General Paleontology: Fossils
Published

Humanity's earliest recorded kiss occurred in Mesopotamia 4,500 years ago      (via sciencedaily.com)     Original source 

Written sources from Mesopotamia suggest that kissing in relation to sex was practiced by the peoples of the ancient Middle East 4,500 years ago.

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

Radio signal reveals supernova origin      (via sciencedaily.com)     Original source 

Astronomers reveal the origin of a thermonuclear supernova explosion. Strong emission lines of helium and the first detection of such a supernova in radio waves show that the exploding white dwarf star had a helium-rich companion.

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

NASA's Spitzer, TESS find potentially volcano-covered Earth-size world      (via sciencedaily.com)     Original source 

Astronomers have discovered an Earth-size exoplanet, or world beyond our solar system, that may be carpeted with volcanoes. Called LP 791-18 d, the planet could undergo volcanic outbursts as often as Jupiter's moon Io, the most volcanically active body in our solar system.

Anthropology: Early Humans Anthropology: General Paleontology: Fossils Paleontology: General
Published

Homo sapiens likely arose from multiple closely related populations      (via sciencedaily.com)     Original source 

In testing the genetic material of current populations in Africa and comparing against existing fossil evidence of early Homo sapiens populations there, researchers have uncovered a new model of human evolution -- overturning previous beliefs that a single African population gave rise to all humans.

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

Astronomers observe the first radiation belt seen outside of our solar system      (via sciencedaily.com)     Original source 

Astronomers have described the first radiation belt observed outside our solar system, using a coordinated array of 39 radio dishes from Hawaii to Germany to obtain high-resolution images. The images of persistent, intense radio emissions from an ultracool dwarf reveal the presence of a cloud of high-energy electrons trapped in the object's powerful magnetic field, forming a double-lobed structure analogous to radio images of Jupiter's radiation belts.

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

New study puts a definitive age on Saturn's rings -- they're really young      (via sciencedaily.com)     Original source 

Physicists measured the flux of interplanetary dust around Saturn. The researchers concluded that the planet's rings formed less than 400 million years ago, making them much younger than Saturn itself.

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

Astronomers reveal the largest cosmic explosion ever seen      (via sciencedaily.com)     Original source 

Astronomers have uncovered the largest cosmic explosion ever witnessed. The explosion is more than ten times brighter than any known supernova and three times brighter than the brightest tidal disruption event, where a star falls into a supermassive black hole.

Space: Astrophysics Space: Cosmology Space: General
Published

Researchers find new approach to explore earliest universe dynamics with gravitational waves      (via sciencedaily.com)     Original source 

Researchers have discovered a new generic production mechanism of gravitational waves generated by a phenomenon known as oscillons.

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

Hidden supermassive black holes brought to life by galaxies on collision course      (via sciencedaily.com)     Original source 

Astronomers have found that supermassive black holes obscured by dust are more likely to grow and release tremendous amounts of energy when they are inside galaxies that are expected to collide with a neighbouring galaxy.