Super-Earths tagged posts

Unknown Treasure Trove of Planets found Hiding in Dust


The Taurus Molecular Cloud, pictured here by ESA’s Herschel Space Observatory, is a star-forming region about 450 light-years away. The image frame covers roughly 14 by 16 light-years and shows the glow of cosmic dust in the interstellar material that pervades the cloud, revealing an intricate pattern of filaments dotted with a few compact, bright cores — the seeds of future stars. (Image: ESA/Herschel/PACS, SPIRE/Gould Belt survey Key Programme/Palmeirim et al. 2013)

The first unbiased survey of protoplanetary disks surrounding young stars in the Taurus star-forming region turned up a higher-than-expected number of disks with features suggesting nascent planets, according to a new study...

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15 new Planets confirmed around Cool Dwarf Stars

Conceptual illustration. A key outcome from the current studies was that planets orbiting red dwarfs may have remarkably similar characteristics to planets orbiting solar-type stars. Credit: Tokyo Institute of Technology

Conceptual illustration. A key outcome from the current studies was that planets orbiting red dwarfs may have remarkably similar characteristics to planets orbiting solar-type stars. Credit: Tokyo Institute of Technology

A new planet near the habitable zone around a bright cool star. Scientists report the existence of 15 new planets – including one ‘super-Earth’ that could harbor liquid water – orbiting small, cool stars near our solar system. These stars, known as red dwarfs, are of enormous interest for studies of planetary formation and evolution. One of the brightest red dwarfs, K2-155 that is around 200 light years away from Earth, has 3 transiting super-Earths, which are slightly bigger than our own planet. Of those 3 super-Earths, the outermost planet, K2-155d, with a radius 1...

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Tracking the Birth of a ‘Super-Earth’

The protoplanetary disk around HL Tauri, a million-year-old sunlike star located approximately 450 light-years from Earth in the constellation of Taurus, dwarfs our solar system (right). Taken by the ALMA array, this image reveals a series of concentric and bright rings, separated by gaps — features astronomers have struggled to explain until now. (Credit: ALMA (ESO/NAOJ/NRAO))

The protoplanetary disk around HL Tauri, a million-year-old sunlike star located approximately 450 light-years from Earth in the constellation of Taurus, dwarfs our solar system (right). Taken by the ALMA array, this image reveals a series of concentric and bright rings, separated by gaps — features astronomers have struggled to explain until now. (Credit: ALMA (ESO/NAOJ/NRAO))

 
‘Synthetic observations’ simulating nascent planetary systems could help explain a puzzle that has vexed astronomers for a long time...
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Lasers Melt Rocks to reveal development of Super-Earths and how giant impacts make Magma

High-powered lasers melt mineral for planet formation experiments. Researchers observed the melting of forsterite, the most common constituent of Earth's mantle, to understand how the cores of planets form and develop. The laser is able to create pressures representative of the extreme collisions between objects in space. The target is a 4 millimeter square. Al is aluminum and Qz is quartz. Image by Toshimori Sekine, Hiroshima University. Image may only be re-used with attribution. Credit: Image courtesy of Hiroshima University

High-powered lasers melt mineral for planet formation experiments. Researchers observed the melting of forsterite, the most common constituent of Earth’s mantle, to understand how the cores of planets form and develop. The laser is able to create pressures representative of the extreme collisions between objects in space. The target is a 4 millimeter square. Al is aluminum and Qz is quartz. Image by Toshimori Sekine, Hiroshima University. Image may only be re-used with attribution. Credit: Image courtesy of Hiroshima University

New experiments provide insight into how Earth-type planets form when giant asteroids or planetesimals collide and how the interiors of such planets develop...

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