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Earth has a hot new neighbour -- and it's an astronomer's dream

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IMAGE: Artistic impression of the surface of the newly discovered hot super-Earth Gliese 486b. With a temperature of about 700 Kelvin (430°C), the astronomers of the CARMENES Consortium expect a Venus-like.
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Credit: RenderArea, https://renderarea.com
A newly discovered planet could be our best chance yet of studying rocky planet atmospheres outside the solar system, a new international study involving UNSW Sydney shows.
The planet, called Gliese 486b (pronounced Glee-seh), is a super-Earth : that is, a rocky planet bigger than Earth but smaller than ice giants like Neptune and Uranus. It orbits a red dwarf star around 26 light-years away, making it a close neighbour - galactically speaking. ....

United States , New South Wales , Castillay Leóp , Western Australia , Ben Montet , Exoplanet Survey Satellite , Scientia Lecturer , Transiting Exoplanet Survey Satellite , Planet Hunters , Atmospheric Chemistry , Space Planetary Science , Planets Moons , Satellite Missions Shuttles , Experiments In Space , Stars The Sun , ஒன்றுபட்டது மாநிலங்களில் , புதியது தெற்கு வேல்ஸ் , மேற்கு ஆஸ்திரேலியா , அறிவியல் விரிவுரையாளர் , கிரகம் வேட்டைக்காரர்கள் , வளிமண்டலம் வேதியியல் , இடம் கிரகங்கள் அறிவியல் , கிரகங்கள் நிலவுகள் , செயற்கைக்கோள் பயணங்கள் விண்கலங்கள் , சோதனைகள் இல் இடம் , நட்சத்திரங்கள் தி சூரியன் ,

Factoring in gravitomagnetism could do away with dark matter

Current assessments of galactic rotation curves are based upon a framework of Newtonian accounts of gravity, a new paper published in ....

Gerson Otto Ludwig , National Institute For Space Research , National Institute , Space Research , Lense Thirring , Chemistry Physics Materials Sciences , கெர்சன் ஒட்தோ லுட்விக் , தேசிய நிறுவனம் க்கு இடம் ஆராய்ச்சி , தேசிய நிறுவனம் , இடம் ஆராய்ச்சி , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,

Volcanoes might light up the night sky of this planet

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IMAGE: This artist s illustration represents the possible interior dynamics of the super-Earth exoplanet LHS 3844b. The planet s interior properties and the strong stellar irradiation might lead to a hemispheric tectonic regime..
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Credit: © Universität Bern / University of Bern, Illustration: Thibaut Roger
On Earth, plate tectonics is not only responsible for the rise of mountains and earthquakes. It is also an essential part of the cycle that brings material from the planet s interior to the surface and the atmosphere, and then transports it back beneath the Earth s crust. Tectonics thus has a vital influence on the conditions that ultimately make Earth habitable. ....

United States , Johannes Geiss , Dan Bower , Tobias Meier , Buzz Aldrin , National Center , Swiss National Fund , University Of Oxford , Planetary Sciences , Physics Institute Of The University Bern , University Of Geneva , University Of Bern , Department Of Space Research , University Of Bern The National Center , Astrophysical Journal , Bernese Solar Wind Composition , Physics Institute , Space Research , Geophysics Gravity , Space Planetary Science , Planets Moons , ஒன்றுபட்டது மாநிலங்களில் , டான் போவர் , டோபியாஸ் மையர் , புழ்ழ் ஆல்ட்ரின் , தேசிய மையம் ,

A super-Earth is discovered which can be used to test planetary atmosphere models

Credit: RenderArea
During the past 25 years astronomers have discovered a wide variety of exoplanets, made of rock, ice and gas, thanks to the construction of astronomical instruments designed specifically for planet searches. Also, using a combination of different observing techniques they have been able to determine a large numher of masses, sizes, and hence densities of the planets, which helps them to estimate their internal composition and raising the number of planets which have been discovered outside the Solar System.
However, to study the atmospheres of the rocky planets, which would made it possible to characterize fully those exoplanets which are similar to Earth, is extremely difficult with currently available instruments. For that reason, the atmospheric models for rocky planets are still not tested. ....

Castillay Leóp , United States , Las Cumbres , X Region , Trifon Trifonov , Antonio Caballero , Exoplanet Mission , Astrobiology Centre , Exoplanet Survey Satellite , Calar Alto , Instituto De Astrofisica Canarias , Max Planck Institute , Multicolour Simultaneous Camera , Enric Pall , James Webb Space Telescope , Extremely Large Telescope , Calar Alto Observatory , Gemini North , Transiting Exoplanet Survey Satellite , Teide Observatory , Las Cumbres Observational Global Telescope , Space Planetary Science , Planets Moons , Satellite Missions Shuttles , Experiments In Space , Stars The Sun ,

USTC detects a sharp rise in detection rate of broad absorption line variations

USTC detected a sharp rise signature in the detection rate of broad absorption line variations, which in turn deduced ionized gas density. ....

Sloan Digital Sky Survey Data , University Of Science , Chinese Academy Of Sciences , Technology Of China , Chinese Academy , Astrophysical Journal Letters , Sloan Digital Sky Survey Data Release , Chemistry Physics Materials Sciences , ஸ்லோன் டிஜிட்டல் வானம் கணக்கெடுப்பு தகவல்கள் , பல்கலைக்கழகம் ஆஃப் அறிவியல் , சீன கலைக்கழகம் ஆஃப் அறிவியல் , தொழில்நுட்பம் ஆஃப் சீனா , சீன கலைக்கழகம் , வானியற்பியல் இதழ் எழுத்துக்கள் , ஸ்லோன் டிஜிட்டல் வானம் கணக்கெடுப்பு தகவல்கள் வெளியீடு , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,