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A Possible Proxima Centauri c

While we continue to labor over the question of planets around Alpha Centauri A and B, Proxima Centauri — that tiny red dwarf with an unusually interesting planet in the habitable zone — remains a robust source of new work. It’s surely going to be an early target for whatever interstellar probes w...

New Planets from Old Data

We rightly celebrate exoplanet discoveries from dedicated space missions like TESS (Transiting Exoplanet Survey Satellite), watching the work go from initial concept to first light in space and early results. But let’s not forget the growing usefulness of older data, tapped and analyzed in n...

A Satellite for Eurybates

3548 Eurybates is a Jupiter trojan, one of the family of objects that have moved within the Lagrange points around Jupiter for billions of years (the term is libration, meaning these asteroids actually oscillate around the Lagrange points). Consider them trapped objects, of consequence bec...

Orange Dwarfs: ‘Goldilocks’ Stars for Life?

Our Sun is a G2V type star, or to use less formidable parlance, a yellow dwarf. It was inevitable that as we began considering planets around other stars (well before the first of these were discovered), we would imagine solar-class stars as the best place to look for life, but attention...

New Entry in High Precision Spectroscopy

As if I don’t have enough trouble figuring out acronyms, I now have to figure out how to pronounce acronyms. The issue comes up because a new NASA instrument now in use at Kitt Peak National Observatory is a spectrograph built at Penn State called NEID. Now NEID stands for NN-EXPLORE Exoplanet Inv...

TOI 700 d: A Possible Habitable Zone Planet

Among the discoveries announced at the recent meeting of the American Astronomical Society in Hawaii was TOI 700 d, a planet potentially in the habitable zone of its star. TOI stands for TESS Object of Interest, reminding us that this is the first Earth-size planet the Transiting Exoplanet Surve...

Discovery of TESS Mission’s First Circumbinary Planet

TOI 1338b is a great catch, a circumbinary world that turned up in TESS data and was announced at the ongoing meeting of the American Astronomical Society in Hawai’i. Ravi Kopparapu (NASA GSFC) describes the discovery process in the essay below. The system lies 1,300 light years out in the c...

Some Thoughts on Science Fiction Visuals

With the conclusion of The Man in the High Castle’s TV version, I’ve been having a few conversations about the ins and outs of turning the novel into a considerably bloated series. Or maybe I should say simply that when I realized at the end of the first season that, having made their choices an...

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 interesting period, one in whic...

Mapping Asteroid Bennu

The holiday season seems an appropriate time to thank not only my Centauri Dreams readers for their continued high level of discussion in these pages, but also the army of citizen scientists who are out there working on everything from exoplanet detection to asteroid mapping. We saw recently how v...

CHEOPS Enters the Game

The Egyptian monarch Khufu was the second pharaoh of the Fourth Dynasty, which dates him back to the earlier years of the Old Kingdom period around the 26th century BC. I mention this figure, about which all too little is known, because his name is a link between the great monuments of an earl...

Will Humans Ever Walk on Exoplanets?

Searching for biosignatures in exoplanet atmospheres is something we can look forward to in as little as a decade, judging from the progress now being made in planning future ground- and space-based telescopes. A key challenge is to catalog habitable zone planets upon which to practice our methods...
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Beats by Dre Presents: Neymar Jr., Harry Kane, Mesut Özil, and Benjamin Mendy in The Defiant Mixtape, Vol. I - Directed by Guy Ritchie

Beats by Dre Presents: Neymar Jr., Harry Kane, Mesut Özil, and Benjamin Mendy in The Defiant Mixtape, Vol. I - Directed by Guy Ritchie: When your time comes, you have two choices. You can be the kid no one's heard of. Or you can be the kid no one saw coming. This is the Defiant Mixtape, Vol. I. #MadeDefiant . . . . Watch The Defiant Mixtape Vol. I directed by Guy Ritchie ft. Neymar Jr., Harry Kane, Mesut Özil, Benjamin Mendy, Eden Hazard, Fyodor Smolov, Patrice Evra, Thierry Henry, Raul Jimenez & Serena Williams. Voiced by Paul Anderson.