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Galilean Moons of Jupiter Could Be Warming Each Other

Hay et al for the first time investigate moon-moon tides in Jupiter’s Galilean moons and show that they can cause significant heating through the excitation of high-frequency resonant tidal waves in their subsurface oceans. Image credit: Galileo Project / Voyager Project / NASA’s Jet Propulsion Laboratory.
Sep 11, 2020 by News Staff

In a process called tidal heating, gravitational push and pull from Jupiter’s Galilean moons — Europa, Ganymede, Io and Callisto — and the gas giant itself stretch and squish the moons enough to warm them. As a result, some of the icy moons contain interiors warm enough to host oceans of liquid water, and in the case of the rocky moon Io, tidal heating melts rock into magma. Planetary researchers previously believed that Jupiter was...

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NASA’s OSIRIS-REx spacecraft is on a mission to explore the asteroid Bennu and return a sample to Earth. Image credit: NASA’s Goddard Space Flight Center Conceptual Image Lab.

OSIRIS-REx Team Explores Activity of Asteroid Bennu

Sep 10, 2020 by News Staff

NASA’s OSIRIS-REx spacecraft, launched in 2016, is currently orbiting the near-Earth asteroid (101955) Bennu with the aim of briefly touching on the...

Reconstruction of a Neanderthal. Image credit: Neanderthal Museum.

Researchers Sequence Mitochondrial Genome of 80,000-Year-Old European Neanderthal

Sep 9, 2020 by Enrico de Lazaro

An international team of scientists has successfully extracted and sequenced the mitochondrial DNA from an 80,000-year-old adult Neanderthal tooth found...

Wells et al estimate that there should be at least 10 -- currently undiscovered -- exoplanets which are favorably located to detect the Earth and are capable of sustaining life as we know it. Image credit: NASA.

Large-Scale SETI Survey of Vela Region Finds No Signs of Extraterrestrial Intelligence

Sep 8, 2020 by News Staff

Astronomers using the Murchison Widefield Array (MWA) radio telescope have searched for technosignatures — indicators of advanced extraterrestrial...

Lady Foot, a Highland wild dog native to New Guinea. Image credit: New Guinea Highland Wild Dog Foundation.

Original New Guinea Singing Dogs Still Exist in the Wild, Study Shows

Sep 8, 2020 by News Staff

The founding population of the New Guinea singing dog, a small-to-medium-sized canid thought to be extinct in the wild since the 1970s, is not, in fact,...

Researchers Find Unique Ancient Rock Drawing of Extinct Sloth Lemur

Sep 7, 2020 by Sergio Prostak

An international team of scientists has discovered stylistically unique ancient drawings, including the only known prehistoric depiction of a now-extinct...

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.

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

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...

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...

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