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Astronomers Find Misaligned and Warped Protoplanetary Disk around Triple-Star System

This composite image shows both ALMA and SPHERE/VLT observations of the disk around GW Orionis. The ALMA image (blue) shows the disk’s ringed structure, with the innermost ring (part of which is visible as an oblong dot at the very center of the image) separated from the rest of the disk. The SPHERE observations (orange-red) allowed the astronomers to see for the first time the shadow of this innermost ring on the rest of the disk, which made it possible for them to reconstruct its warped shape. Image credit: ALMA / ESO / NAOJ / NRAO / ESO / University of Exeter / Kraus et al.
Sep 3, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) and the SPHERE (Spectro-Polarimetric High-contrast Exoplanet Research) instrument on ESO’s Very Large Telescope (VLT) have discovered a rare circumtriple protoplanetary disk with misaligned dust rings around the young hierarchical triple system GW Orionis. They give two possible scenarios for the misalignment: either the disk was torn apart by the gravitational pull from the...

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An artistic rendering of the Horse Butchery Site and the Boxgrove people; it shows how the site was situated in front of towering chalk cliffs on the edge of an intertidal lagoon; the cliffs to the north provided all the flint used in tool making at the site and, within a few hours, the tide would have begun to cover the site in fine silt, preserving evidence of the day’s activity. Image credit: Lauren Gibson / Institute of Archaeology, University College London.

Homo heidelbergensis was Extremely Resourceful, New Research Shows

Sep 3, 2020 by News Staff

New research pieces together the activities and movements of a group of Homo heidelbergensis, a poorly understood species of archaic humans that lived...

An artist’s impression of binary black holes about to collide. Image credit: Mark Myers, ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Australian National University.

Astronomers Witness Birth of Intermediate-Mass Black Hole

Sep 2, 2020 by News Staff

Astronomers using the twin LIGO detectors located in Livingston, Louisiana, and Hanford, Washington, and the Virgo detector located near Pisa, Italy, have...

Artistic rendering of American mastodons (Mammut americanum). Image credit: Julius Csotonyi.

American Mastodons Migrated Across Vast Distances Due to Warming Climate, DNA Study Says

Sep 2, 2020 by News Staff

A team of researchers from McMaster University and elsewhere has carried out a phylogeographic study of the extinct American mastodon (Mammut americanum)...

A stone plaquette engraved with abstract designs from the Magdalenian site of Les Varines, Jersey, Channel Islands. Image credit: Bello et al, doi: 10.1371/journal.pone.0236875.

15,000-Year-Old Abstract Art Found in Channel Islands

Sep 2, 2020 by News Staff

A team of archaeologists from the United Kingdom has uncovered 15,000-year-old stone plaquettes extensively engraved with abstract designs at the Magdalenian...

Ecological reconstruction of a 165-million-year-old lacewing mimicking a lichen that existed during the same time period. Image credit: Xiaoran Zuo.

Jurassic Lacewings Mimicked Lichen to Hide from Predators

Sep 1, 2020 by News Staff

Paleontologists in China have unearthed the fossil evidence of a mimetic relationship between two species of moth lacewings and the co-occurring fossil...

Magnified perspective of the titanosaurian embryonic skull with the preorbital and orbital region in left lateral view. Image credit: Kundrat et al, doi: 10.1016/j.cub.2020.07.091.

Paleontologists Find Perfectly Preserved Embryo inside 80-Million-Year-Old Titanosaurian Egg

Aug 31, 2020 by News Staff

Paleontologists recently found well-preserved dinosaur eggs in an enormous nesting ground of titanosaurian sauropod dinosaurs that lived about 80 million...

An artist’s impression of the hot Neptune TOI-824b and its parent star TOI-824. Also known as SCR J1448-5735, TYC 8688-915-1, TIC 193641523 and 2MASS J14483982-5735175, the star is around 70% the size and mass of the Sun and is 10.9 billion years old. Image credit: Sci-News.com.

Rare Hot Neptune Found Orbiting Nearby Dwarf Star

Aug 31, 2020 by Natali Anderson

Using NASA’s Transiting Exoplanet Survey Satellite (TESS) and two ground-based instruments, astronomers have discovered and confirmed a transiting hot...

This SEM image shows a polished thin section of Asuka 12236. The section is about 1 cm (a third of an inch) across. Most of the bright grains in the image are iron-nickel-metal and/or iron-sulfide. The gray is mostly silicate, with the darker gray areas more magnesium-rich, while the lighter gray areas are more iron-rich. The roundish objects, and some fragments of them, that tend to contain most of the small, bright metal grains are called chondrules, which formed as molten droplets. They are set in a very fine-grained matrix, which is where the organic compounds and presolar grains are found. Image credit: Carnegie Institution for Science / Conel M. O’D. Alexander.

Researchers Find Extraterrestrial Amino Acids in Antarctic Meteorite

Aug 31, 2020 by News Staff

A team of astrobiologists from NASA’s Goddard Space Flight Center and the Carnegie Institution for Science has found a wide diversity of amino acids...

An artist’s impression of Lystrosaurus. Image credit: Victor O. Leshyk, www.victorleshyk.com / University of Birmingham.

Paleontologists Find Evidence of Hibernation-Like State in Tusks of Triassic Mammal Relative

Aug 28, 2020 by News Staff

In a paper published in the journal Communications Biology, a team of U.S. paleontologists reports evidence of a hibernation-like condition in Lystrosaurus,...

Scelidosaurus harrisonii. Image credit: John Sibbick.

Paleontologist Redescribes Enigmatic Armored Dinosaur from Jurassic Period

Aug 28, 2020 by News Staff

Scelidosaurus harrisonii, an armored dinosaur that lived around 193 million years ago (Early Jurassic epoch), has been redescribed from a near-complete...

This image shows the location of the 43 quasars Lehner et al used to probe Andromeda’s gaseous halo. These quasars are scattered far behind the halo, allowing scientists to probe multiple regions. Looking through the immense halo at the quasars’ light, the team observed how this light is absorbed by the halo and how that absorption changes in different regions. By tracing the absorption of light coming from the background quasars, the astronomers are able to probe the halo’s material. Image credit: NASA / ESA / E. Wheatley, STScI.

Astronomers Create Map of Andromeda Galaxy’s Gaseous Halo

Aug 28, 2020 by News Staff

Astronomers using the NASA/ESA Hubble Space Telescope have found that a halo of diffuse plasma around the Andromeda galaxy, which is located 2.5 million...

Life reconstruction of the putative attack of a young to sub-adult Purussaurus on the ground sloth Pseudoprepotherium in a swamp of proto-Amazonia. Image credit: Jorge A. González.

Giant Miocene Caiman Preyed on Ground Sloths

Aug 27, 2020 by Sergio Prostak

Purussaurus, a top predator that lived in the wetlands of proto-Amazonia between 6 and 13 million years ago (Miocene epoch), hunted not only aquatic animals...

A mustatil in the Nefud Desert, northern Arabia. Image credit: Huw Groucutt.

Archaeologists Find 7,000-Year-Old Stone Monuments in Northern Arabia

Aug 25, 2020 by Enrico de Lazaro

An international team of archaeologists has found and studied 104 enigmatic stone structures called ‘mustatils’ in the southern part of the Nefud Desert...

An artist’s impression of a free-floating exoplanet. Image credit: NASA / JPL-Caltech / R. Hurt, Caltech-IPAC.

Free-Floating Exoplanets May Outnumber Stars in Milky Way

Aug 25, 2020 by News Staff

Free-floating, or rogue, exoplanets — free-floating planetary-mass objects that do not orbit a star and instead travel through space — could...

An aerial photo of the Canaanite fortress near Gal On in central Israel. Image credit: Emil Aladjem, Israel Antiquities Authority.

Archaeologists Unearth Canaanite Fortress in Central Israel

Aug 25, 2020 by News Staff

Archaeologists from the Israel Antiquities Authority (IAA) have uncovered the ruins of a 3,200-year-old Canaanite fortress near Gal On, a kibbutz in central...

The Solar System moves through the Local Interstellar Cloud. Image credit: NASA / Adler / University of Chicago / Wesleyan.

Solar System is Traveling through Cloud of Supernova Debris: Study

Aug 25, 2020 by Enrico de Lazaro

An international team of scientists has found interstellar iron-60, a radioactive isotope with a half-life of 2.6 million years that is predominantly produced...

A hoard of Islamic gold coins dating from the 9th century CE, found near Yavne in Israel. Image credit: Emil Aladjem / Israel Antiquities Authority.

Huge Trove of Gold Coins from Abbasid Period Unearthed in Israel

Aug 25, 2020 by News Staff

A team of archaeologists and volunteers has unearthed a hoard of 1,100-year-old Islamic gold coins near the city of Yavne in the Central District of Israel. A...

Paleontologists Find Massive Marine Reptile in Stomach of Triassic Ichthyosaur

Aug 24, 2020 by News Staff

A new fossil of Guizhouichthyosaurus, a 5-m- (16.4-foot) long ichthyosaur that swam in Middle Triassic oceans some 240 million years ago, contains the...

Platymantis navjoti male in life. Image credit: Cameron Siler, University of Oklahoma.

New Species of Forest Frog Discovered in Philippines

Aug 24, 2020 by Natali Anderson

An international team of field biologists has described a new species of the frog genus Platymantis from Leyte and Samar islands, the Philippines. The...

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