Skip to comments.Astronomers discover nearby six-planet solar system with 'pristine configuration'
Posted on 12/01/2023 8:55:50 AM PST by SunkenCiv
Astronomers have used two different exoplanet-detecting satellites to solve a cosmic mystery and reveal a rare family of six planets located about 100 light-years from Earth...
The six exoplanets orbit a bright star similar to the sun named HD110067, which is located in the Coma Berenices constellation in the northern sky. Larger than Earth but smaller than Neptune, the planets are in a little-understood class called sub-Neptunes commonly found orbiting sunlike stars in the Milky Way. And the planets, labeled b through g, revolve around the star in a celestial dance known as orbital resonance...
For every six orbits completed by planet b, the closest planet to the star, the outermost planet g completes one.
As planet c makes three revolutions around the star, planet d does two, and when planet e completes four orbits, planet f does three.
This harmonic rhythm creates a resonant chain, with all six planets aligning every few orbits...
Researchers first took notice of the star system in 2020 when NASA's Transiting Exoplanet Survey Satellite, or TESS, detected dips in the brightness of HD110067... Detecting these dips in luminosity, known as the transit method, is one of the main strategies used by scientists to identify exoplanets via ground and space-based telescopes...
Two years later, TESS observed the star again, and the evidence suggested different orbital periods for those planets.
When the data sets didn't add up, astronomer and lead study author Rafael Luque and some of his colleagues decided to take another look at the star using a different satellite — the European Space Agency's CHaracterising ExOPlanet Satellite, or Cheops. While TESS is used to observe fractions of the night sky for short observations, Cheops observes one star at a time.
(Excerpt) Read more at accuweather.com ...
The orbits of the six planets revolving around a star called HD110067 create a geometric pattern due to their resonance.
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“and reveal a rare family of six planets located...”
How do they know they are rare? We have barely even begun to detect such things.
Astronomers discover nearby six-planet solar system with 'pristine configuration'Let's go crap it up!
Dibs on g. I like a longer planetary year. :)
They ought to call this the ‘Brady Bunch’ solar system................
How the hell is 100 light years ‘nearby’?
How do they know they are rare?
Better question: How do we know they are natural?
I wasn’t even born when the images they see were made.
That is truly amazingly cool, if I am understanding this
Closest planet orbits sun 2 times for ever 1 time the 2nd planet does... 3 times for ever time the 3rd planet does. 4 times for ever time the 5th planet does and 6 times for every time the 6th planet does.
That’s just amazing... Definitely triggering my inner geek hard on this one.
OH wait, not quite what they are saying but still pretty damn cool
If this system were 10,000 or a billion light years out, we'd never know about these planets. Considering the size of the known Universe, 100 light years distance is extremely close.
Analogously, Titius-Bode's Law -- which isn't so much a law as a mnemonic -- is based on the observation that our solar system planets have a resonant spacing (which they don't, really). My guess is, there are other bodies so far undiscovered in this newly described planetary system.
Because of the overall size of the galaxy, obviously.
The Nearest Stars to Earth (Infographic)
Why, is the father gay?
[singing] here's the story of an ugly lady who was bringing up three very ugly girls... [/singing]
As a friend of his reportedly pointed out, he should have called this one “Dirty Pool”:
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