Transmission and eclipse spectroscopy have been invaluable tools for the characterisation of extrasolar planet atmospheres. While they will continue to provide many new insights and discoveries in the decade(s) to […]
Stellar Cartography
Posted inAstrogeology, Astronomy & Telescopes, Comets and Asteroids, Exoplanets, -moons, -comets, Fomalhaut, Imaging & Spectroscopy, Press Release, Stellar Cartography
Hubble Sees Asteroids Colliding at Nearby Star for First Time
Like a game of cosmic bumper cars, scientists think the early days of our solar system were a time of violent turmoil, with planetesimals, asteroids, and comets smashing together and […]
![[LEFT:] A Rare Brown Dwarf: HIP 71618 B [RIGHT:] A New Giant Planet: HIP 54515 b -- W. M. Keck Observatory and the Subaru Telescope.](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/12/Discoveries-From-Maunakea-Reveal-1.png?resize=1200%2C720&ssl=1)
Posted inAstronomy & Telescopes, Brown Dwarfs, Exoplanets, -moons, -comets, Gas Giants, Press Release, Stellar Cartography
Discoveries From Maunakea Reveal Hidden Worlds Around Accelerating Stars
Astronomers using W. M. Keck Observatory and the Subaru Telescope on Maunakea, Hawaiʻi Island have discovered a massive planet and a brown dwarf orbiting distant stars—two rare companions that deepen […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gaia Mission, Imaging & Spectroscopy, Proxima Centauri, Status Report, Stellar Cartography
Astrometric Reconnaissance of Exoplanetary Systems (ARES). I. Methodology Validation With HST Point-source Images Of Proxima Centauri
We present the first results of the Astrometric Reconnaissance of Exoplanetary Systems (ARES) project, aimed at validating and characterizing candidate exoplanets around the nearest systems using multi-epoch Hubble Space Telescope […]
Posted inAstronomy & Telescopes, Beta Pictoris, Exoplanets, -moons, -comets, Status Report, Stellar Cartography
First Astrometric Limits On Binary Planets And Exomoons Orbiting β Pictoris b
The search for exomoons, or moons in other star systems, has attracted significant interest in recent years, driven both by advancements in detection sensitivity and by the expanding population of […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Status Report, Stellar Cartography, Water/Hycean Worlds & Oceanography
A First Order Filter For The Detection of Potentially Habitable Exoplanets
The search for potentially habitable exoplanets is a primary objective in modern astrophysics, yet the vast number of candidates discovered by missions like Kepler and TESS presents a significant challenge […]
Posted inAstrochemistry, Astronomy & Telescopes, Extinction events, Habitable Zones, Press Release, Stellar Cartography
Close Brush With Two Hot Stars Left A Mark Just Beyond Our Solar System
Nearly 4.5 million years ago, two large, hot stars brushed tantalizingly close to Earth’s sun. They left behind a trace in the clouds of gas and dust that swirl just […]
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Interstellar, Press Release, Stellar Cartography
Newly Discovered Star Opens A Laboratory For Solving A Cosmic Dust Mystery
Seventy light-years from Earth, a star called Kappa Tucanae A harbors one of astronomy’s most perplexing mysteries: dust so hot it glows at more than 1,000 degrees Fahrenheit, existing impossibly […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report, Stellar Cartography
Planetary Habitability Under The Light Of A Rapidly Changing Star
Planetary atmospheric energy budgets primarily depend on stellar incident flux. However, stellar variability can have major consequences for the evolution of planetary climates.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
Two Warm Earth-sized Exoplanets And An Earth-sized Candidate In The M5V-M6V Binary System TOI-2267
We report the discovery of two “warm” exoplanets orbiting a very tight pair of small, cool stars called TOI-2267.