New freelance writings: planetary math, marine archaeologists, underwater robots, and a movie review

In case you missed them, check out my recent stories, from the search for life on distant worlds to clues of the collapse of civilizations on the bottom of the ocean. Thanks to my editors for helping these pieces turn out so well.

 

The Next Step In The Search For Aliens Is A Huge Telescope And A Ton Of Math

This illustration shows the possible surface of TRAPPIST-1f, one of the recently discovered Earth-sized planets in the TRAPPIST-1 system. (Credits: NASA/JPL-Caltech)

Aliens could be hiding on almost any of the Milky Way’s roughly 100 billion planets, but so far, we haven’t been able to find them (dubious claims to the contrary notwithstanding). Part of the problem is that astronomers don’t know exactly where to look or what to look for. To have a chance of locating alien life-forms — which is like searching for a needle that may not exist in an infinitely large haystack — they’ll have to narrow the search.

Astronomers hoping to find extraterrestrial life are looking largely for exoplanets (planets outside Earth’s solar system) in the so-called “Goldilocks zone” around each star: a distance range in which a planet is not too hot and not too cold, making it possible for liquid water to exist on the surface. But after studying our own world and many other planetary systems, scientists have come to believe that many factors other than distance are key to the development of life. These include the mix of gases in the atmosphere, the age of the planet and host star, whether the host star often puts out harmful radiation, and how fast the planet rotates — some planets rotate at a rate that leaves the same side always facing their star, so one hemisphere is stuck in perpetual night while the other is locked into scorching day. This makes it a complex problem that scientists can start to tackle with powerful computers, data and statistics. These tools — and new telescope technology — could make the discovery of life beyond Earth more likely…

[Read the entire story on FiveThirtyEight, published on 21 July.]

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Sharing the solar eclipse

It was wonderful sharing the solar eclipse with my 15-month-year old kid! He won’t remember this, and he kept pulling the eclipse glasses off his face, but I think he enjoyed the experience. It may not be such a big deal to him, at least not yet, but it’s important to me.

Thousands of San Diegans thronged to Balboa Park near the Fleet Science Center to enjoy the eclipse together.

I was moved and impressed to see so many San Diegans enjoying even just the partial eclipse together. I saw thousands in just one part of Balboa Park, next to the Fleet Science Center and Natural History Museum, and I’m sure people flocked to other locations too, including the central library in town. We had our NASA-approved eyewear, which I was happy to pass around to those around me, and the marine layer burned off in time, giving us a perfect view of the whole thing.

Eclipses are rare affairs, encouraging us to stop, quit squabbling about politics and our quotidian concerns, and just look up in the sky. (With proper eye protection, of course.) Such a cosmic event, a dance of the Earth, Moon, and Sun, really puts things in perspective.

Let’s not forget what this moment feels like. We’re in this together, people. This is our planet, our one and only world, and it’s up to us humans to take care of it.

Had to feed my kid a bottle while I enjoyed the eclipse (which you can see a reflection of on the back of my shirt).

I’m happy hearing everyone’s stories and reflections on the eclipse. Feel free to share your experiences on social media, in the comments below, or the old-fashioned way — in person.

My partner and I are already planning to check out the 8 April 2024 solar eclipse, and this time we’ll do it right — in totality. My kid will be almost 8 then, or about four Martian years old. Maybe we’ll head to Mazatl&‌aacute;n, Mexico, to witness it on the edge of Aztec country.