An artist’s illustration of the planetary system K2-138, which was discovered by citizen scientists in 2017 using data from NASA’s Kepler space telescope. Five planets were initially detected in the system. In 2018, scientists using NASA’s Spitzer Space Telescope found evidence of a sixth planet in the system. (NASA/JPL-Caltech/R. Hurt (IPAC))
What’s out there?
When the Kepler space telescope hurtled into space in 2009, the answer to that question became a matter of when, not if. The telescope’s launch kicked off NASA’s first attempt to hunt for planets outside our solar system. It yielded the discoveries of more than 2,600 confirmed planets.
One, or even some, of those exoplanets might have the conditions needed to sustain life. In his new book, “Universal Life: An Inside Look Behind the Race to Discover Life Beyond Earth,” astrophysicist Alan Boss gives the reader an up-close look at the Kepler project, its amazing journey and the search in the past two decades for Earthlike planets in our galaxy.
Boss, an accomplished scientist at the Carnegie Institution for Science, has long contributed to NASA’s exoplanet exploration program (including as past chair of the executive committee of the program’s analysis group). In the book, he gives a comprehensive view of Kepler’s origins and contributions to our knowledge of possible life in the great beyond.
NASA retired Kepler late last year after it ran out of fuel. By then, the telescope had observed more than 530,000 stars and had traveled 94 million miles through space, according to NASA. Boss gives a brisk, detailed tour of its dizzying contributions to science. The book is packed with the budget woes and scientific celebrations (and acronyms) that make up life at NASA. It covers the agency insiders who are making discovery possible in tiny, sometimes frustrating steps. Each chapter is broken into small, vignette-type sections with such titles as “Can We Build It Any Faster?” and “Hey, I Had That Idea First.”
These bite-sized segments make the fire hose of material accessible. So does his conversational tone. Reading the book is like sitting in the office with someone who’s eager to explain the ins and outs of the science and the program.
Boss also has an upbeat take on what comes next thanks to Kepler.
“We now know that Earthlike planets are universal, and we expect that life will be just as universal,” he says.
Quelle: The Washington Post