Who’s Out There?— Ozone? What Else?

Could seasonal variations in atmospheric content provide evidence for life on exoplanets? Sounds better than just a sniff of methane. However, noting seasonal variations requires sniffing at different times during a planet’s year, which may be tricky but possible, given the talents of the new TESS telescope (and later the Webs.)

NASA

According to a 15 May 2018 article in Physics Today, Carles Resling noted a sinusoidal “seasonal variation” in trees of Earth’s Northern Hemisphere measurements of carbon dioxide. Stephanie Olson of UC Riverside “…identified three gases.…” She confirmed the seasonal variation but decided CO2 was likely to have saturated absorption lines
during the entire exoplanet year. Methane would show a photochemical variation occuring “…regardless of the presence of life.” A seasonal variation of oxygen would be more promising since it is not soluble in water and can be indicated by measuring ozone in the near-ultraviolet with a “large-aperture space telescope with a UV spectrometer.” (S.L.
Olson et al, Astrophysics J. Lett 858, L14, 2018.)

Future missions that promise to search for evidence of life on exoplanets include ESA’s PLATO, a six-year mission scheduled for a 2024 launch. It will look at one million stars, for planetary transit and oscillations, building on Kepler’s work to understand their dynamics and habitability with twenty four 12-centimeter-diameter telescopes. It should be able to see small planets, ring moons and asteroids.

We will soon be hearing from the TESS mission, which will cover 85% of the sky looking for nearby exoplanets, first the Southern Hemisphere sky then the Northern. An EOS.org favorite, its mission will be to directly detect and analyze giant planet atmospheres with its spectrography “…working in concert with its coronograph, revealing the structure and
chemical composition of the atmosphere.

TESS’s launch was successful, and it is now in its“commissioning period,” its functions checked for accuracy. NASA’s May 18 report notes a lunar flyby, a first test image taken, and a successful final “science orbit” attained.
(www.nasa.gov/feature/goddard/2018/nasa-s-tess-spacecraft-continues-testing-prior-to-first-observations). Under the direction of Dr. George Ricker, more than 12 universities, research institutes, and observatories are involved, and first observations should be coming in near the end of July.

Author of The Archives of Varok
The View Beyond Earth (Book 1.)
The Webs of Varok (Book 2.)
Nautilus Silver Award 2013 YA
ForeWord IBPA finalist 2012 adult SF
The Alien Effect (Book 3.)
An Alien’s Quest (Book 4. Released Nov.21, 2016)

Excerpts, Synopses, Reviews, On Writing, Characters and More-
ArchivesofVarok.com
Reviews of significant books- www.goodreads.com/Cary_Neeper
How the Hen House Turns- www.ladailypost.com
Complexity, Bio, Bibliography and Links- caryneeper.com
Astrobiology- astronaut.com search:Who’s Out There

Cary Neeper is an avid student of complexity theory, sustainability, steady-state economics, and the impact of cosmology on issues of science and religion. She grew up in the foothills of Hayward, California, where she helped rack dried fruit on her father’s 40-acre apricot ranch. After studying zoology/chemistry and religion at Pomona College and medical microbiology at the University of Wisconsin, she moved with her husband to northern New Mexico, where they raised their family. The Neepers still live in the Southwest with a friendly menagerie of dogs, fish, chickens, geese, ducks and a turkey called Little Bear. Cary plays string bass with local folk, symphony and jazz groups and tennis with local retired physicists. She paints landscapes in acrylics, including the cover art for her first Penscript title, The Webs of Varok. Cary's first novel and Webs of Varok prequel A Place Beyond Man was originally published in 1975 by Charles Scribner’s Sons, Dell, and Millington, London. Cary re-released A Place Beyond Man as an Author’s Guild Backinprint edition, now available from online booksellers. Its themes of sustainability and interspecies cooperation have now grown into new adventures for its human, elll and varok family as they travel the alternate 21st century Solar System in the five-volume Archives of Varok, coming from Penscript Publishing House in 2012–2014. Cary’s other works include two musical science fiction comedies “U.F.F.D.A.!” and “Petra and the Jay,” as well as newspaper and magazine articles, essays, short stories, and book reviews for The Christian Science Monitor.

You may also like...

Subscribe To Our Newsletter

Join our mailing list to receive the latest news and updates from Astronaut.com.

You have Successfully Subscribed!