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Astronomers Detect Prolonged X-Ray Emission from Neutron-Star Merger

This X-ray image, taken by NASA’s Chandra X-ray Observatory, shows GW170817. The central panel shows the stacked image of the field, with total exposure of 783 ks. The position of GW170817 is marked. In addition, several X-ray point sources as well as extended diffuse X-ray emissions are visible. The image stamps are centered on the location of GW170817, showing the main phases of its evolution. Image credit: Troja et al., doi: 10.1093/mnras/staa2626.
Oct 14, 2020 by News Staff

In 2017, astronomers detected a gravitational-wave signal, designated GW170817, from the merger of two neutron stars. And since the detection, they have been continuously monitoring the subsequent emissions to provide the most complete picture of such an event. Their analysis provides possible explanations for X-rays that continued to radiate from the GW170817 collision long after models predicted they would stop. This X-ray image, taken by NASA’s...

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Trachenko et al. show that a combination of two dimensionless fundamental constants results in a new dimensionless constant that provides the upper bound for the speed of sound in condensed phases. Image credit: Gerd Altmann.

Physicists Find Upper Limit for Speed of Sound in Solids and Liquids

Oct 14, 2020 by News Staff

Using two dimensionless fundamental constants, an international team of physicists has calculated the fastest possible speed of sound in condensed phases...

The Muisca antpitta (Grallaria rufula). Image credit: Nigel Voaden / CC BY-SA 2.0.

Six New Bird Species Discovered in South America

Oct 13, 2020 by Sergio Prostak

A team of ornithologists from the United States, Colombia and Denmark has described six new cryptic species in the rufous antpitta (Grallaria rufula) complex...

Astronomers Monitor Flare from Nearby, Fast-Evolving Tidal Disruption Event

Oct 13, 2020 by News Staff

Using ESO’s Very Large Telescope (VLT) and New Technology Telescope (NTT), the Las Cumbres Observatory global telescope network, and NASA’s Neil Gehrel...

This Hubble image shows the free-floating evaporating gaseous globule J025157.5+600606. The color image is made up of observations from Hubble’s Advanced Camera for Surveys (ACS) in the near-infrared and optical parts of the spectrum. Three filters were used to sample various wavelengths. The color results from assigning different hues to each monochromatic image associated with an individual filter. Image credit: NASA / ESA / Hubble / R. Sahai.

Hubble Space Telescope Spots Free-Floating EGG

Oct 13, 2020 by Enrico de Lazaro

Astronomers using the NASA/ESA Hubble Space Telescope have snapped a remarkable image of J025157.5+600606, a free-floating evaporating gaseous globule...

This oblique color view from the HiRISE instrument onboard NASA’s Mars Reconnaissance Orbiter shows a lithified field of sand dunes within Melas Chasma, Valles Marineris. The large degree of preserved morphology for many of these paleodunes reveals important information regarding the acting wind regime and climate prior to their cementation. Image credit: NASA / JPL / University of Arizona.

One-Billion-Year-Old Sand Dunes Spotted on Mars

Oct 12, 2020 by News Staff

Planetary researchers have mapped and characterized ancient sand dune fields in the canyons of Valles Marineris on Mars. Their discovery offers new insights...

Polo scene from the tomb of Li Yong, Fuping county, Shaanxi province, China. Image credit: P. Wertmann.

Archaeologists Find 3,000-Year-Old Balls in China

Oct 12, 2020 by Enrico de Lazaro

An international team of archaeologists has found three ancient leather balls in tombs of the prehistoric Yanghai cemetery near the modern city of Turfan...

An artist’s illustration of Colomys lumumbai. Image credit: Velizar Simeonovski, Field Museum.

Two New Species of Semi-Aquatic Mice Discovered in Africa

Oct 12, 2020 by News Staff

An international team of researchers has discovered two new species of the murine genus Colomys living in Africa: one in Liberia and Guinea and one in...

Lucas et al. find that the prevalence of the persistent median artery in postnatal life approximately tripled over the last 125 years. Image credit: C.M. Da Silva.

Humans are Evolving Extra Artery in Forearm: Median Artery

Oct 12, 2020 by News Staff

The median artery of the human forearm is an example of microevolutionary changes in the internal anatomy of the human body, according to new research...

This Hubble image shows a spectacular part of the reflection nebula NGC 7023. The color image was made from separate exposures taken in the visible and near-infrared regions of the spectrum with Hubble’s Near Infrared Camera and Multi-Object Spectrometer. Image credit: NASA / ESA / Hubble.

Hubble Zooms in on Beautiful Reflection Nebula: NGC 7023

Oct 12, 2020 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has unveiled in stunning detail a part of the bright reflection nebula NGC 7023. This Hubble image shows a spectacular...

Life reconstruction of Mesopithecus pentelicus. Image credit: Mauricio Antón.

Fossils of 6.4-Million-Year-Old Monkey Found in China

Oct 9, 2020 by News Staff

Paleontologists have found the remains of Mesopithecus pentelicus — an extinct species of Old World monkey that lived in Europe and Asia between...

The Chicxulub asteroid impact. Image credit: Victor Leshyk.

Dust and Soot Contributed to End-Cretaceous Mass Extinction

Oct 9, 2020 by News Staff

A team of researchers from the US, the UK and Australia has analyzed burn markers from the boundary of the impact site of the Chicxulub crater in the Yucatán...

The top of WASP-121b’s atmosphere is heated to a blazing 4,600 degrees Fahrenheit. Image credit: NASA / ESA / G. Bacon, STSci.

Astronomers Detect Vaporized Metals in Atmosphere of Hot Jupiter

Oct 9, 2020 by Enrico de Lazaro

Astronomers using the HARPS (High Accuracy Radial velocity Planet Searcher) spectrograph at ESO’s La Silla Observatory in Chile have detected gaseous...

NASA’s OSIRIS-REx spacecraft at asteroid Bennu. Image credit: NASA Goddard Space Flight Center.

New Studies Detail Complex History of Near-Earth Asteroid Bennu

Oct 9, 2020 by News Staff

NASA’s OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer) mission to the near-Earth asteroid Bennu is...

When faced with the risk of drowning, black imported fire ants (Solenopsis richteri) used sand to siphon liquid food out of containers. Image credit: Zhou et al.

Black Imported Fire Ants Adapt Tool Use to Avoid Drowning

Oct 8, 2020 by News Staff

Black imported fire ants (Solenopsis richteri) have the remarkable ability to adapt its tool use: when provided with small containers of sugar water, they...

Reconstruction of a Neanderthal. Image credit: Neanderthal Museum.

Neanderthals’ Deep and Short Ribcage was Already Present at Birth

Oct 8, 2020 by Enrico de Lazaro

An international team of researchers has virtually reconstructed the ribcages of four Neanderthal individuals from birth to around 3 years old and found...

Early Moon. Image credit: NASA.

New Study Challenges Hypothesis that Moon’s Crust was Magnetized by Meteoroid Impacts

Oct 8, 2020 by News Staff

The crusts of the Moon, Mercury and many small bodies in the Solar System are magnetized. Although the magnetizing field is commonly attributed to that...

Life reconstruction of Gavialimimus almaghribensis hunting a school of teleosts. Image credit: Tatsuya Shinmura.

New Species of Mosasaur Unveiled in Morocco

Oct 8, 2020 by News Staff

A new genus and species of mosasaur has been identified from a 1-m- (3.3-foot-) long skull and isolated bones found in a phosphate mine in Morocco. Life...

Meteoroids bombarded the Earth-Moon system 800 million years ago. Image credit: Murayama, Osaka University.

Moon May Have Fragments of Ancient Venus on Its Surface

Oct 7, 2020 by News Staff

If the atmosphere of Venus was at any point thin and similar to Earth’s, then ancient asteroid impacts transferred potentially detectable amounts of...

New Bird-Like Dinosaur Unearthed in Mongolia

Oct 7, 2020 by Enrico de Lazaro

Paleontologists in Mongolia have found the fossilized skeletal remains from a new genus and species of two-fingered oviraptorosaur that walked the Earth...

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