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Centauri Dreams. by Paul Gilster | Aug 6, 2026 | 31 Comments.
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The Ones Who Look Outward
Thinking about a great filter through which a civilization must pass before its survival is assured usually leads to catastrophic scenarios, such as planetary suicide by nuclear war, or climate holocaust (assuming the filter lies ahead of us and not behin
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Detection of a Habitable Zone Planet with an Atmosphere
If we couldn't figure out what to call CD-35 2722B b, which I assume is the correct way to refer to the planet-sized object in this red dwarf / brown dwarf/ gas giant system, another planet has a bit of a definitional problem as well. LHS 1140 b is an int
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Moon or Planet? The Awkward Case of CD-35 2722B
Problems of definition will long be with us as we take ever closer looks at exoplanets. But they're suddenly on everyone's mind because of the detection of what some are calling an 'exomoon' in the system CD-35 2722, found in the constellation Columba. Th
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Planetary-mass exosatellite detected around the substellar companion of a star
Brown dwarfs occupy the mass regime between planets and stars. In systems containing both a star and a substellar companion (be it a brown dwarf or an exoplanet), a third object orbiting the companion can be called an exosatellite. Exoplanet satellites ca
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New Propulsion Systems for Deep Space Smallsats
Building the infrastructure we will need for interstellar exploration requires an imaginative look at today's technologies as applied to distant targets. Indeed, we can leverage the scientific interest in, say, an orbit around each of the ice giants to ex
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