Japanese researchers said this month (September 7, 2023) that a possible Earthlike planet – with a mass some 1.5 to 3 times that of our home world – is lurking in the far, frozen reaches of our own solar system.
They looked not within the primary Kuiper Belt, which might be said to begin at Neptune’s orbit (at 30 Earth-distances from the sun, or 30 AU ) and to extend to perhaps 50 AU.
Publisher: EarthSky | Updates on your cosmos and world
Date: 2023-09-13T11:41:23 00:00
Twitter: @earthskyscience
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