Harmonizing with yesterday's post about a NASA grant to study technosignatures is word from Breakthrough Listen, which has released a catalog of what it calls 'exotica' or, to cite the accompanying paper: "an 865 entry collection of 737 distinct targets intended to...
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HD 158259: 6 Planets, Slightly Off-Tune
What an exceptional system the one around HD 158259 is! Here we have six planets, uncovered with the SOPHIE spectrograph at the Haute-Provence Observatory in the south of France, with the innermost world also confirmed through space-based TESS observations. Multiple...
On Freeman Dyson
Freeman Dyson's response to the perplexity of our existence was not purely scientific. A polymath by nature, he responded deeply to art and literature and often framed life's dilemmas through their lens. Always thinking of himself as a mathematician first, he unified...
Trident: Firming up the Triton Flyby
It's not a Triton, or even a Neptune orbiter, but Trident is still an exciting mission, a Triton flyby that would take a close look at the active resurfacing going on on this remarkable moon. Trident has recently been selected by NASA's Discovery Program as one of...
A Deep Dive into Tidal Lock
Mention red dwarf habitable zones and tidal lock invariably comes up. If a planet is close enough to a dim red star to maintain temperatures suitable for life, wouldn't it keep one face turned toward it in perpetuity? But tidal lock, as Ashley Baldwin explains in the...
Bound in Shallows: Space Exploration and Institutional Drift
If those of us from the Apollo era sometimes look back with regret at the failure of our society to follow through on early lunar exploration, we can still acknowledge that the issue is far from settled. As Nick Nielsen points out in the essay below, we're in an...
Artificial Singularity Power: A Basis for Developing and Detecting Advanced Spacefaring Civilizations
Could an advanced civilization create artificial black holes? If so, the possibilities for power generation and interstellar flight would be profound. Imagine cold worlds rendered habitable by tiny artificial 'suns.' Robert Zubrin, who has become a regular contributor...
The Human Adventure is Just Beginning: Alien and Star Trek: The Motion Picture at 40
Larry Klaes loves science fiction movies. Those of you who have read his deep dives into such films as Forbidden Planet, Avatar or The Thing from Another World can understand why I think of Larry as the Robert Osborne of the SF movie (if you don't know who Robert...
Spectroscopic Evidence of a Possible Exomoon
It shouldn’t surprise us that first discoveries can be extreme. Consider that the first main sequence exoplanets we detected were ‘hot Jupiters.’ Nobody expected these (unless you discount John Barnes and Buzz Aldrin in Encounter with Tiber, and Greg Matloff, who...
Lunar Landing Backup: Apollo’s Abort Guidance System
Al Jackson shares more memories of Apollo this morning in his account of a little known spacecraft component, the Abort Guidance System. A NASA historical document on computers aboard the Apollo spacecraft refers to the Abort Guidance System as "...probably the most...