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New Research Doubles Number of Known Dark Comets

This artist’s impression shows ‘Oumuamua, the first interstellar object discovered in our Solar System. Recent observations show that the object is moving faster than predicted while leaving the Solar System. Astronomers assume that venting material from its surface due to solar heating is responsible for this behavior. This outgassing can be seen in this artist’s impression as a subtle cloud being ejected from the side of the object facing the Sun. Image credit: NASA / ESA / Hubble / ESO / M. Kornmesser.
Dec 10, 2024 by News Staff

Dark comets are small bodies with no detected coma that have significant accelerations explainable by outgassing of volatiles, analogous to the first interstellar object 1I/2017 U1 ‘Oumuamua. These objects represent a potentially widespread class of small bodies that further populate the continuum between asteroids and comets and for which the active nature is inferred from their orbital motion. Michigan State University astronomer Darryl Seligman...

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Dulcibella camanchaca, holotype female. Image credit: Weston et al., doi: 10.1080/14772000.2024.2416430.

Predatory Crustacean Species Discovered in Atacama Trench

Dec 10, 2024 by Enrico de Lazaro

The Atacama Trench stretches along the eastern South Pacific Ocean, plunging to depths exceeding 8,000 m off the coast of northern Chile. Dulcibella camanchaca,...

Added sugar intake was positively associated with ischemic stroke and abdominal aortic aneurysm, although the highest risks of most outcomes were found in the lowest intake category; positive linear associations were found between toppings intake and abdominal aortic aneurysm, and between sweetened beverage intake and ischemic stroke, heart failure, atrial fibrillation, and abdominal aortic aneurysm; negative linear associations were found between treats intake (pastries, ice cream, chocolate, and sweets) and all outcomes, and between toppings intake (table sugar, honey, jams, and marmalades) and heart failure and aortic stenosis. Image credit: Ernesto Rodriguez.

Drinking Sweetened Beverages Significantly Increases Cardiovascular Disease Risk, Study Suggests

Dec 10, 2024 by News Staff

In a new study published in the journal Frontiers in Public Health, scientists investigated the associations between intake of added sugar and various...

From 2014 to 2024, Hubble has been studying Jupiter, Saturn, Uranus, and Neptune under the OPAL program. Image credit: NASA / ESA / Hubble / A. Simon, NASA-GSFC / M.H. Wong, UC Berkeley / J. DePasquale, STScI.

Hubble’s OPAL Program Celebrates Decade of Tracking Solar System’s Giant Planets

Dec 10, 2024 by News Staff

The OPAL (Outer Planet Atmospheres Legacy) program obtains long-term baseline observations of Jupiter, Saturn, Uranus, and Neptune in order to understand...

A pair of Platypterigius sp. Image credit: Dmitry Bogdanov / CC BY 3.0.

98-Million-Year-Old Ichthyosaur Fossil Uncovered in New Zealand

Dec 9, 2024 by Natali Anderson

Paleontologists in New Zealand have discovered a partial skeleton of platypterygiid ichthyosaur dating to the Cretaceous period. A pair of Platypterygius...

An artist’s illustration of Webb revealing, in the infrared, a population of main-belt decameter asteroids. Image credit: Ella Maru / Julien de Wit.

Webb Detects 138 Decameter Asteroids in Main Belt

Dec 9, 2024 by News Staff

These asteroids are as small as 10 m across, making them the smallest asteroids ever observed in the main asteroid belt. An artist’s illustration of...

This DECam image shows the spiral galaxy Messier 83. Image credit: CTIO / NOIRLab / DOE / NSF / AURA / T.A. Rector, University of Alaska Anchorage & NSF NOIRLab / D. de Martin, NSF NOIRLab / M. Zamani, NSF NOIRLab.

Dark Energy Camera Captures Stunning New Image of Messier 83

Dec 9, 2024 by News Staff

The swirling spiral arms of Messier 83, one of the most prominent spiral galaxies in the night sky, display a high rate of star formation and have been...

This composite image, taken by JAXA’s Akatsuki spacecraft, shows Venus. Image credit: JAXA / ISAS / DARTS / Damia Bouic.

Venus Has Never Been Habitable, New Study Suggests

Dec 9, 2024 by News Staff

Planetary researcher Tereza Constantinou and her colleagues at the University of Cambridge have examined the chemical composition of the Venusian atmosphere...

This Hubble image shows NGC 5643, a grand design spiral some 55 million light-years away in the constellation of Lupus. Image credit: NASA / ESA / Hubble / A. Riess / D. Thilker / D. De Martin, ESA & Hubble / M. Zamani, ESA & Hubble.

Hubble Space Telescope Revisits NGC 5643

Dec 9, 2024 by Enrico de Lazaro

The Hubble team has released a striking new image of the central part of NGC 5643, a grand design spiral galaxy in the constellation of Lupus. This Hubble...

Intake of dark chocolate instead of milk chocolate may be associated with a lower risk of type 2 diabetes. Image credit: Sci.News.

Increased Consumption of Dark, But Not Milk, Chocolate Reduces Type 2 Diabetes Risk: Study

Dec 6, 2024 by News Staff

Consumption of at least five servings of dark chocolate a week (one serving is equal to a standard chocolate bar/pack or 1 oz) compared with rare consumption...

A portrait of a juvenile female Denisovan based on a skeletal profile reconstructed from ancient DNA methylation maps. Image credit: Maayan Harel.

New Species of Archaic Human Proposed: Homo juluensis

Dec 6, 2024 by Enrico de Lazaro

Homo juluensis — a newly-erected human species that includes enigmatic Denisovans and several hominin fossils from Tibet, Taiwan and Laos —...

The frequency of emoji use varies across genders and relationship types. Image credit: Pete Linforth.

Study: People with Higher Emotional Intelligence Use Emojis More Frequently

Dec 5, 2024 by News Staff

Higher emotional intelligence is linked to more emoji use with friends, while avoidant attachment is associated with less emoji use with friends and dating...

An Early Cretaceous floodplain in southeastern England, 135 million years ago: a spinosaur (center) takes over the carcass of an ornithopod, much to the annoyance of the smaller tyrannosaurs (left) and dromaeosaurids (bottom right). Image credit: Anthony Hutchings.

Fossilized Teeth Highlight Theropod Dinosaur Diversity in Prehistoric East Sussex

Dec 5, 2024 by News Staff

Several groups of meat-eating dinosaurs — tyrannosaurs, spinosaurs and members of the Velociraptor family — stalked what is now the Bexhill-on-Sea...

Bottom-up nano- to micro-fabrication is crucial in modern electronics and optics. Conventional multi-scale array fabrication techniques, however, are facing challenges in reconciling the contradiction between the pursuit of better device performance and lowering the fabrication cost and/or energy consumption. Chang et al. introduce a facile mixed-metal array fabrication method based on guided self-assembly of polymerizing organometallic adducts derived from the passivating oxides of a ternary liquid metal to create mixed metal wires. Image credit: Julia Chang.

Researchers Demonstrate New Technique for Self-Assembling Electronics

Dec 5, 2024 by News Staff

The new proof-of-concept work, published in the journal Materials Horizons, paves the way for self-assembling more complex electronic devices without relying...

An artist’s reconstruction of Clovis life 13,000 years ago shows the Anzick-1 infant with his mother consuming mammoth meat near a hearth. Another individual crafts tools, including dart projectile points and atlatls. A mammoth butchery area is visible nearby. Image credit: Eric Carlson / Ben Potter / Jim Chatters.

Clovis People’s Diet Mainly Included Mammoths and Other Large Mammals, New Study Says

Dec 4, 2024 by News Staff

Paleoanthropologists have found that the Columbian mammoth (Mammuthus columbi) was the largest contributor to the diet of the Clovis people — the...

This false-color four-image mosaic comprises images taken from a distance of 28.7 km from the center of Comet 67P/Churyumov-Gerasimenko on 3 February 2015. The mosaic measures 4.2 x 4.6 km. Image credit: ESA / Rosetta / NAVCAM / CC BY-SA IGO 3.0.

Study: Comet 67P/Churyumov-Gerasimenko’s Water Has Similar Molecular Signature to Earth’s Water

Dec 4, 2024 by NASA

Contradicting the results of several recent studies, the new findings reopen the case that Jupiter-family comets like 67P/Churyumov-Gerasimenko could have...

Transgenic hybrid poplar with increased expression levels of BSTR enhanced photosynthesis efficiency and biomass under greenhouse conditions. Image credit: Feyissa et al., doi: 10.1016/j.devcel.2024.11.002.

Newly-Discovered Gene Enhances Photosynthetic Efficiency and Plant Productivity

Dec 4, 2024 by News Staff

Biologists have identified a new gene in California poplar trees (Populus trichocarpa) — named BOOSTER — that enhances photosynthesis and can...

Starspots on the surface of XX Trianguli. Image credit: HUN-REN RCAES / Zs. Kővári, MOME / Á. Radványi, AIP / K. Strassmeier.

Astronomers Observe Starspots on Surface of Giant Star

Dec 4, 2024 by Enrico de Lazaro

XX Trianguli, a bright K0-type giant star in a binary system located in the constellation of Triangulum, exhibits chaotic, non-periodic star spot behavior,...

A diffractive robot. Image credit: Smart et al., doi: 10.1126/science.adr2177.

Researchers Create Smallest Walking Robot Yet

Dec 4, 2024 by News Staff

A team of researchers at Cornell University has created a new class of magnetically controlled microscopic robots (microbots) that operate at the visible-light...

The Neanderthal hearth structure could have been made following these steps. Image credit: Ochando et al., doi: 10.1016/j.quascirev.2024.109025.

65,000-Year-Old Neanderthal Hearth Structure Discovered in Gibraltar

Dec 3, 2024 by Enrico de Lazaro

Archaeologists say they have discovered a new type of Neanderthal hearth at Vanguard Cave, Gibraltar. This hearth structure coincides with predictions...

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