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1,000+ results for "Red Dwarf"

Blue tips are red algae’s red flags

Researchers at Kobe University discovered that red algae use structural color to communicate with each other. The discovery was made in the European Journal of Phycology and suggests that these colors may serve as a warning signal to algae-eating fish.

SourceKobe University·JournalEuropean Journal of Phycology·TypeObservational study·DateMay 5, 2025

Is my red your red?

A team of researchers from the University of Tokyo and Monash University developed a novel approach to quantify consciousness, specifically analyzing color similarity judgments. They found that color-neurotypical red is relationally equivalent to other color-neurotypical's red, but not to colorblind people's red.

SourceUniversity of Tokyo·JournaliScience·TypeExperimental study·DateApr 15, 2025

First radio pulses traced to dead-star binary

An international team has traced radio pulses to a binary system with a dead star, where a red dwarf and white dwarf orbit each other, emitting a radio blast every two hours. This discovery shows that the movement of stars within a binary system can also emit long-period radio bursts.

SourceNorthwestern University·JournalNature Astronomy·TypeObservational study·DateMar 12, 2025

DESI uncovers 300 new intermediate-mass black holes plus 2500 new active black holes in dwarf galaxies

The Dark Energy Spectroscopic Instrument (DESI) has discovered a treasure trove of actively feeding black holes in small galaxies, revealing surprisingly few are of intermediate mass. The team identified 300 new intermediate-mass black hole candidates and 2500 active black holes in dwarf galaxies.

Wobbling stars reveal hidden companions in Gaia data

Two new celestial objects have been confirmed using Gaia data, including a Super-Jupiter exoplanet and a brown dwarf. The discovery challenges current theories of planet formation and provides valuable data for understanding these intriguing objects. Gaia's ongoing mission will uncover hundreds of planets and brown dwarfs around nearby...

SourceEuropean Space Agency·JournalThe Astrophysical Journal·TypeObservational study·DateFeb 4, 2025

Large and small galaxies may grow in ways more similar than expected

A team of astronomers has obtained detailed images of a small galaxy and its surroundings, revealing features typically associated with larger galaxies. The study found that the mechanisms fueling galaxy growth may be more universal than previously thought, suggesting that even dwarf galaxies can build stellar halos through accretion.

SourceUniversity of Arizona·JournalThe Astrophysical Journal·TypeObservational study·DateJan 16, 2025

DECam and Gemini South discover three tiny ‘stellar-ghost-town’ galaxies

Researchers have discovered three tiny ultra-faint dwarf galaxies, dubbed 'stellar-ghost-town' galaxies, with minimal gas and old stars. This suggests that their star formation was cut off early in the universe's history due to insufficient gravity or events like reionization or supernovae explosions.

SourceAssociation of Universities for Research in Astronomy (AURA)·JournalThe Astrophysical Journal Letters·DateJan 15, 2025

USTC proposes a new strategy for designing pure-red OLED materials

Researchers have designed a new strategy for creating pure-red organic light emitting diodes (OLEDs) with improved efficiency and color purity. The molecule BNTPA achieves record-breaking external quantum efficiency, making it suitable for next-generation high-definition displays and energy-efficient lighting systems.

SourceUniversity of Science and Technology of China·JournalJournal of the American Chemical Society·DateDec 8, 2024

Rocky planets orbiting small stars could have stable atmospheres needed to support life

A University of Washington-led study suggests that rocky planets orbiting M-dwarf stars can maintain stable atmospheres over time, enhancing the chances of supporting life. The James Webb Space Telescope has observed hotter planets without significant atmospheres, but temperate planets in the 'Goldilocks zone' may have stable atmospheres.

SourceUniversity of Washington·JournalNature Communications·TypeComputational simulation/modeling·DateOct 23, 2024

NASA’s Hubble finds that a black hole beam promotes stellar eruptions

Astronomers using NASA's Hubble Space Telescope discovered that the blowtorch-like jet from a supermassive black hole at the core of a huge galaxy causes stars to erupt along its trajectory. The finding suggests that there is something missing from our understanding of how black hole jets interact with their surroundings.

SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal·TypeObservational study·DateSep 26, 2024

Genetic rescue for rare red foxes?

Research finds high levels of inbreeding in Lassen and Sierra Nevada red fox populations, highlighting genetic rescue as a viable option for restoration. The study also reveals the potential for reconnection with neighboring populations to increase adaptive potential.

SourceUniversity of California - Davis·JournalMolecular Biology and Evolution·DateSep 26, 2024

Unravelling an ancient European extinction mystery: Disappearance of dwarf megafauna on palaeolithic Cyprus

A new study reveals that palaeolithic hunter-gatherers on Cyprus are responsible for the disappearance of two species of megafauna: dwarf elephants and hippos. The research suggests that these small human populations could have driven both species to extinction due to their hunting practices.

SourceFlinders University·JournalProceedings of the Royal Society B Biological Sciences·TypeData/statistical analysis·DateSep 17, 2024

De-mystifying the targeted removal of red blood cells

Red blood cells undergo a regulated process of removal to prevent premature ageing and potential health issues. The study highlights the role of proteins in regulating this process, paving the way for novel therapeutics and early diagnostics for anaemia.

SourceGriffith University·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateSep 1, 2024

NASA’s Hubble traces dark matter in dwarf galaxy using stellar motions

A team of astronomers used NASA's Hubble Space Telescope to create the most accurate three-dimensional understanding of stars' movements within the Draco dwarf galaxy. This allowed them to build a more precise model of dark matter distribution, which aligns with cosmological models and suggests a cusp-like structure.

SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal·TypeObservational study·DateJul 11, 2024

Mysterious mini-Neptunes

Four transiting short-period mini-Neptunes orbiting red dwarfs have been discovered, with radii 2-3 times that of Earth and orbital periods under eight days. Their interiors likely contain volatiles and atmospheres, suggesting non-rocky composition.

SourceNational Institutes of Natural Sciences·JournalThe Astronomical Journal·TypeObservational study·DateJun 13, 2024

Hungry, hungry white dwarfs: solving the puzzle of stellar metal pollution

Researchers found that white dwarfs continuously consume smaller objects in their path, explaining the presence of heavy metals on their surface. The 'natal kick' during formation alters the dynamics of surrounding material, causing comets and asteroids to become elongated orbits and move as one coherent unit.

SourceJILA·JournalThe Astrophysical Journal Letters·TypeComputational simulation/modeling·DateMay 3, 2024