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A compositional link between planets and their respective host star has long been assumed in astronomy. For the first time now, a team of scientists, .. ....

Christoph Mordasini , Vardan Adibekyan , Caroline Dorn , National Centre Of Competence , University Of Bern , University Of Zurich , National Centre , Instituto De Astrof , Planet Formation , Ambizione Fellow ,

The 7 rocky TRAPPIST-1 planets may be made of similar stuff


The 7 rocky TRAPPIST-1 planets may be made of similar stuff
Credit: NASA/JPL-Caltech.
The red dwarf star TRAPPIST-1 is home to the largest group of roughly Earth-size planets ever found in a single stellar system.
Located about 40 light-years away, these seven rocky siblings provide an example of the tremendous variety of planetary systems that likely fill the universe.
A new study published in the Planetary Science Journal shows that the TRAPPIST-1 planets have remarkably similar densities.
That could mean they all contain about the same ratio of materials thought to compose most rocky planets, like iron, oxygen, magnesium, and silicon. ....

United States , Eric Agol , Caroline Dorn , Propulsion Laboratory , University Of Washington , University Of Zurich , Planetary Science Journal , Transiting Planets , Planetesimals Small Telescope , Spitzer Space Telescope , Southern California , ஒன்றுபட்டது மாநிலங்களில் , கரோலின் டார்ந் , ப்ரொபல்ஶந் ஆய்வகம் , பல்கலைக்கழகம் ஆஃப் வாஷிங்டன் , பல்கலைக்கழகம் ஆஃப் ஸுரி , கிரகங்கள் அறிவியல் இதழ் , ஸ்பிட்சர் இடம் தொலைநோக்கி , தெற்கு கலிஃபோர்னியா ,

These 7 Earth-size exoplanets named after beer may be incredibly similar


These 7 Earth-size exoplanets named after beer may be incredibly similar
CNN
1/26/2021
© NASA
This graphic shows the TRAPPIST-1 planetary system.
Just 40 light-years from Earth is a planetary system that has intrigued scientists since its discovery in 2016.
While some of the planets in this system will be observed by the upcoming James Webb Space Telescope, scheduled to launch in October, researchers continue to uncover new details that make TRAPPIST-1 even more distinct.
The planets, which are too small and faint to be seen by any current ground or space-based telescopes, have such similar densities that they may have equally similar compositions, new research has suggested. ....

Caroline Dorn , University Of Zurich , James Webb Space Telescope , Planetary Science , Caltech This , கரோலின் டார்ந் , பல்கலைக்கழகம் ஆஃப் ஸுரி , ஜேம்ஸ் வலை இடம் தொலைநோக்கி , கிரகங்கள் அறிவியல் , கால்டெக் இது ,