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Site URL: centauri-dreams.org
Feed URL: www.centauri-dreams.org/feed
Posts: 10
Followers: 1
A Better Look at 3I/ATLAS
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Published: July 16, 2025 17:40
Just a short note, prompted by the release of new imagery of the intersellar object 3I/ATLAS by the Gemini North telescope in Hawaii. It’s startling how quickly we’ve moved from the first pinpoint images of this comet to what we see below, which draws on…
A New Horizons First for Interstellar Navigation
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Published: July 15, 2025 12:19
If you’re headed for another planet, celestial markers can keep your spacecraft properly oriented. Mariner 4 used Canopus, a bright star in the constellation Carina, as an attitude reference, its star tracker camera locking onto the star after its Sun…
3I/ATLAS: Observing and Modeling an Interstellar Newcomer
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Published: July 10, 2025 18:46
Let’s run through what we know about 3I/ATLAS, now accepted as the third interstellar object to be identified moving through the Solar System. It seems obvious not only that our increasingly powerful telescopes will continue to find these interlopers, but…
New Model to Prioritize the Search for Exoplanet Life
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Published: July 7, 2025 17:21
Our recent focus on habitability addresses a significant problem. In order for astrobiologists to home in on the best targets for current and future telescopes, we need to be able to prioritize them in terms of the likelihood for life. I’ve often commented…
A Sedna Orbiter via Nuclear Propulsion
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Published: July 1, 2025 19:17
When you’re thinking deep space, it’s essential to start planning early, at least at our current state of technology. Sedna, for example, is getting attention as a mission target because while it’s on an 11,000 year orbit around the Sun, its perihelion at…
JWST Catch: Directly Imaged Planet Candidate
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Published: June 27, 2025 18:45
We have so few exoplanets that can actually be seen rather than inferred through other data that the recent news concerning the star TWA 7 resonates. The James Webb Space Telescope provided the data on a gap in one of the rings found around this star, with…
Interstellar Flight: Perspectives and Patience
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Published: June 25, 2025 12:27
This morning’s post grows out of listening to John Coltrane’s album Sun Ship earlier in the week. If you’re new to jazz, Sun Ship is not where you want to begin, as Coltrane was already veering in a deeply avant garde direction when he recorded it in 1965.…
TFINER: Ramping Up Propulsion via Nuclear Decay
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Published: June 20, 2025 17:46
Sometimes all it takes to spawn a new idea is a tiny smudge in a telescopic image. What counts, of course, is just what that smudge implies. In the case of the object called ‘Oumuamua, the implication was interstellar, for whatever it was, this smudge was…
Inflatable Technologies for Deep Space
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Published: June 11, 2025 09:04
One idea for deep space probes that resurfaces every few years is the inflatable sail. We’ve seen keen interest especially since Breakthrough Starshot’s emergence in 2016 in meter-class sails, perhaps as small as four meters to the side. But if we choose…
Odd Couple: Gas Giants and Red Dwarfs
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Published: June 6, 2025 12:15
The assumption that gas giant planets are unlikely around red dwarf stars is reasonable enough. A star perhaps 20 percent the mass of the Sun should have a smaller protoplanetary disk, meaning sufficient gas and dust to build a Jupiter-class world are…