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Table of Contents

• ↓ Imagining and Planning Interstellar Exploration
• ↓ Disrupted Systems: Implications for Life
• ↓ Pandora: Tuning Up our Data on Exoplanet Atmospheres
• ↓ Fermi Explorer: Building the First Mission to Another Star?
• ↓ Roman Space Telescope Launches Tomorrow
• ↓ A ‘Time Variable’ Feature on Pluto?
• ↓ Top Alternatives to centauri-dreams.org

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"Anthropocentric thinking is a persistent problem when we’re talking about extraterrestrial civilizations. Some of our most cherished notions can be invoked so effortlessly as to defy the imagination. The Copernican idea that life must exist elsewhere because elsewhere is bound to be more or less like here has had a long lifetime in SETI studies. It seems like the most basic common sense. And yet, as we’ll see once again today, scientific results continue to make it apparent that the fact that we are here does not mean that they are there."

"Finding stellar systems more or less like our own continues to be difficult. I’m not going full ‘rare Earth’ here but acknowledging that our circumstances may be unusual enough to tamp down estimates of the number of life-supporting planets. For that matter, our lack of knowledge about abiogenesis itself makes the case that we cannot necessarily expect it around other suns. On this matter, at least, we should be able to gather data soon, perhaps with a Mars lander."

"Which gets me to today’s interesting take on binary stars. The binaries – HD 129171 and HD 129209 – are G-class, both having formed from the same molecular cloud. This is a common enough scenario, because binary systems are extremely common. In fact, about half of the stars in the Milky Way have a companion star, and thus are likely to share a common chemistry."

"About 180 light years from the Sun (based on Gaia data) in Boötes, the system is proving unusually helpful. Using the UVES spectrograph on ESO’s Very Large Telescope (VLT) in Chile, an international effort led by Anne Rathsam at the University of São Paulo in Brazil is using this binary as a laboratory to study chemical differences between the stars that may be telling us something about planet formation and orbital evolution. What is driving the differences?"

Key Topics & Focus Areas for centauri-dreams.org:

Imagining and Planning Interstellar Exploration

Disrupted Systems: Implications for Life

Pandora: Tuning Up our Data on Exoplanet Atmospheres

Fermi Explorer: Building the First Mission to Another Star?

Roman Space Telescope Launches Tomorrow

A ‘Time Variable’ Feature on Pluto?