Two super-Earths found orbiting nearby red dwarf star
Worlds without end: Astronomers have detected evidence of two super-Earths orbiting Gliese 887, only 11 light years away and the brightest red dwarf star in the night sky.
They used a technique known as “Doppler wobble”, which enables them to measure the tiny back and forth wobbles of the star caused by the gravitational pull of the planets. The regular signals correspond to orbits of just 9.3 and 21.8 days, indicating two super-Earths – Gliese 887b and Gliese 887c – both larger than the Earth yet moving rapidly, much faster even than Mercury. Scientists estimate the temperature of Gliese 887c to be around 70oC.
Because Gliese 887 is a very constant star, not very active, and with relatively few strong flares, they think these planets have a chance of retaining their atmospheres.
Be aware that these are like most exoplanets only candidate exoplanets. Until their existence is confirmed by other researchers, it is possible the detection is a false one.
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Worlds without end: Astronomers have detected evidence of two super-Earths orbiting Gliese 887, only 11 light years away and the brightest red dwarf star in the night sky.
They used a technique known as “Doppler wobble”, which enables them to measure the tiny back and forth wobbles of the star caused by the gravitational pull of the planets. The regular signals correspond to orbits of just 9.3 and 21.8 days, indicating two super-Earths – Gliese 887b and Gliese 887c – both larger than the Earth yet moving rapidly, much faster even than Mercury. Scientists estimate the temperature of Gliese 887c to be around 70oC.
Because Gliese 887 is a very constant star, not very active, and with relatively few strong flares, they think these planets have a chance of retaining their atmospheres.
Be aware that these are like most exoplanets only candidate exoplanets. Until their existence is confirmed by other researchers, it is possible the detection is a false one.
In order to remain completely independent and honest in my writing, I accept no sponsorships from big space companies or any political organizations. Nor do I depend on ads.
Instead, I rely entirely on the generosity of readers to keep Behind the Black running. You can either make a one time donation for whatever amount you wish, or you sign up for a monthly subscription ranging from $2 to $15 through Paypal, or $3 to $50 through Patreon, or any amount through Zelle.
The best method to donate or subscribe is by using Zelle through your internet bank account, since it charges no fees to you or I. You will need to give my name and email address (found at the bottom of the "About" page). What you donate is what I get.
To use Patreon, go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
For PayPal click one of the following buttons:
If these electronic payment methods don't work for you, you can support Behind The Black directly by sending your donation by check, payable to Robert Zimmerman, to
Behind The Black
c/o Robert Zimmerman
P.O.Box 1262
Cortaro, AZ 85652
on the difficulty of detecting Earth-sized exoplanets:
“Measuring the Speed of Stars”
Ryan Rubenzahl
Caltech Astronomy, June 2020
https://youtu.be/7A9c5IEzM0w
1:59:26
Wow! Only 65 trillion miles away!!! Maybe we can build a ship for the anarchist left so they can go create their utopia there?
I get that “super earth” is a name they came up with so people get an idea of what they are talking about, but I do not like the term.
“Large terrestrial planet” seems more accurate.
Using the word Earth in it leads to the assumption of a green living healthy water world.
For all we know, they could just be giant rocks, or micro gas planets (/sarc on that last one).
“Scientists estimate the temperature of Gliese 887c to be around 70oC.”
Not sure if that is a typo meaning 70C or 700C. Either way, hot!
And if they are so close in, would they be tidally locked?