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An artist’s conception of HD 21749c, the first Earth-sized planet found by NASA’s Transiting Exoplanets Survey Satellite (TESS), as well as its sibling, HD 21749b, a warm sub-Neptune-sized world. Image credit: Robin Dienel / Carnegie Institution for Science.

HD 21749c: TESS Discovers Its First Earth-Sized Exoplanet

Apr 17, 2019 by News Staff

NASA’s Transiting Exoplanets Survey Satellite (TESS) has discovered its first Earth-sized planet — HD 21749c. An artist’s conception of HD 21749c,...

An illustration showing how a sliver of cometary building block material was swallowed by an asteroid and preserved inside a meteorite. Image credit: Larry Nittler / NASA.

Scientists Find Cometary Fragment in Primitive Asteroidal Meteorite

Apr 16, 2019 by News Staff

A cometary building block has been discovered inside the LaPaz Icefield (LAP) 02342, a carbonaceous chondrite meteorite found in Antarctica in the 2000s. An...

An artist’s rendering of the surface of Saturn’s largest moon, Titan. Image credit: Benjamin de Bivort, debivort.org / CC BY-SA 3.0.

Titan’s Lakes are Surprisingly Deep, Have Methane-Dominated Composition, Says Cassini Team

Apr 16, 2019 by News Staff

Radar data from NASA’s Cassini spacecraft have revealed that small lakes in the northern hemisphere of Saturn’s hazy moon Titan are surprisingly deep...

Denisovans were probably dark-skinned, unlike the pale Neandertals. The picture shows a Neanderthal man. Image credit: Mauro Cutrona.

Two Independent Denisovan Lineages Contributed to Modern Papuan Genomes: Study

Apr 12, 2019 by News Staff

According to a new study published in the journal Cell, modern Papuans carry hundreds of gene variants from two Denisovan lineages — distinct from...

Fossils of Silurian Sea Cucumber Found in UK

Apr 12, 2019 by News Staff

An international team of paleontologists has found the remains of an extinct sea cucumber in 430 million-year-old (Silurian period) fossil-rich deposits...

An archaic hominin. Image credit: Ninara / CC BY 2.0.

Homo luzonensis: New Species of Ancient Human Discovered

Apr 11, 2019 by News Staff

An early human species with a unique mix of primitive (that is, Australopithecus-like) and derived (that is, Homo sapiens-like) morphological features...

Potassium pearls under paraffin oil. Image credit: Images of Elements / CC BY 3.0.

Physicists Confirm Existence of Chain-Melted State of Matter

Apr 10, 2019 by News Staff

Until now, atoms in physical matter were understood to exist typically in one of three states — solid, liquid or gas. An international team of physicists...

The EHT Collaboration unveiled the first direct visual evidence of the supermassive black hole in the center of the elliptical galaxy Messier 87 and its shadow. The shadow of a black hole seen here is the closest we can come to an image of the black hole itself, a completely dark object from which light cannot escape. The black hole’s boundary -- the event horizon from which the EHT takes its name -- is around 2.5 times smaller than the shadow it casts and measures just under 25 billion miles (40 billion km) across. Image credit: EHT Collaboration.

Event Horizon Telescope Captures First Image of Black Hole

Apr 10, 2019 by News Staff

Astronomers using the Event Horizon Telescope (EHT) — a planet-scale array of eight ground-based radio telescopes (ALMA, APEX, the IRAM 30-m telescope,...

Durum wheat (Triticum turgidum ssp. durum). Image credit: Christine Dautin.

Durum Wheat Genome Sequenced

Apr 9, 2019 by News Staff

A multinational team of researchers has successfully sequenced and analyzed the genome of durum wheat (Triticum turgidum ssp. durum), a cereal grain mainly...

New Species of Extinct Pig-Footed Bandicoot Discovered

Apr 9, 2019 by News Staff

An international team of researchers from Australia and the United Kingdom has discovered a new species of pig-footed bandicoot which has been extinct...

The view from the bottom of ‘Menara.’ Image credit: Unding Jami / University of Oxford.

World’s Tallest Tropical Tree Found in Malaysia

Apr 8, 2019 by News Staff

The world’s tallest known tropical tree, and possibly the tallest flowering plant, has been discovered in the Danum Valley Conservation Area in the Malaysian...

NASA’s Parker Solar Probe approaching the Sun. Image credit: Johns Hopkins University Applied Physics Laboratory.

NASA’s Parker Solar Probe Makes Second Close Approach to Sun

Apr 8, 2019 by News Staff

On April 4, 2019, NASA’s Parker Solar Probe achieved its second perihelion (close approach) of the Sun and flew within 15 million miles (24 million km)...

Peregocetus pacificus. Image credit: A. Gennari.

Four-Legged ‘Whale’ Lived in Peru 43 Million Years Ago

Apr 5, 2019 by News Staff

A new species of ancient whale ancestor has been identified from a fossilized skeleton found in Peru. This illustration shows an artistic reconstruction...

An artist’s impression of a terraformed Mars. Image credit: Daein Ballard / CC BY-SA 3.0.

Hungarian Researchers Claim to See Biosignatures in Martian Meteorite

Apr 4, 2019 by Natali Anderson

ALH-77005, a Martian rock found in Antarctica, contains numerous mineralized ‘biosignatures,’ including coccoidal, filamentous structures and organic...

Achrioptera manga, an adult male from Foret d’Orangea, Madagascar. Image credit: Glaw et al, doi: 10.3389/fevo.2019.00105.

Malagasy Giant Stick Insects Play with Colors

Apr 4, 2019 by Enrico de Lazaro

In two new species of giant stick insects from the dry forests of Madagascar, males turn blue or multicolored at sexual maturity. Achrioptera manga, an...

Mosaic of the Valles Marineris hemisphere of Mars projected into point perspective, a view similar to that which one would see from a spacecraft. The distance is 1,550 miles (2,500 km) from the surface of the planet. The mosaic is composed of 102 Viking Orbiter images of Mars. The center of the scene shows the entire Valles Marineris canyon system, over 1,240 miles (2,000 km) long and up to 5 miles (8 km) deep, extending form Noctis Labyrinthus, the arcuate system of graben to the west, to the chaotic terrain to the east. Many huge ancient river channels begin from the chaotic terrain from north-central canyons and run north. The three Tharsis volcanoes (dark red spots), each about 15.5 miles (25 km) high, are visible to the west. South of Valles Marineris is very ancient terrain covered by many impact craters. Image credit: NASA / JPL-Caltech.

Methane on Mars: New Discovery or Just Lot of Hot Air?

Apr 3, 2019 by The Conversation

The discovery of life on Mars would get pretty much everyone excited. But the scientists hunting for it would probably be happy no matter what the outcome...

The Chicxulub impact 66 million years ago generated a tsunami-like wave in an inland sea that killed and buried fish, mammals, insects and a Triceratops, the first victims of a cataclysm that led to Earth’s last mass extinction. Image credit: Robert DePalma.

66-Million-Year-Old Fossil Site Preserves Animals Killed within Minutes of Chicxulub Impact

Apr 3, 2019 by News Staff

At a site dubbed Tanis in North Dakota’s Hell Creek Formation, paleontologists have unearthed an assemblage of exquisitely-preserved fossilized organisms...

Physicists Create ‘Featherweight’ Oxygen

Apr 2, 2019 by News Staff

A team of nuclear physicists from the Washington University, St. Louis, Michigan State University, Western Michigan University and the University of Connecticut...

An artist’s impression of the super-Earth K2-265b. Image credit: Sci-News.com.

AI Finds Elusive Super-Earths in K2 Data

Apr 2, 2019 by Natali Anderson

A team of researchers from Google Brain, the University of Texas at Austin, MIT, the University of California, Berkeley, Harvard-Smithsonian Center for...