The discovery of the language of life, an ancient, long molecule called DNA with eight nucleotide letters suitable for storing and transmitting information, was a breakthrough in our knowledge of the range of possibilities necessary for life on Earth and beyond. Now, new studies suggest that alternatives to DNA-based life, as we know it on Earth, may be possible on other worlds.
“Analysis of TESS data focuses on individual stars and planets one at a time, but I wanted to step back and highlight everything at once, really emphasizing the spectacular view TESS gives us of the entire sky,” said Ethan Kruse, a NASA Postdoctoral Program Fellow at NASA’s Goddard Space Flight Center of a new mosaic of the southern sky produced from a year of observations that includes supernova, red giant Betelgeuse, Orion Nebula, satellite galaxies, and the flare from a star ripped apart by a supermassive black hole.
“In science fiction, there is a lot of effort put into searching for signs of life like plants, animals and organisms that look like us. But there is a higher probability that alien life will be at the microscopic level,” says Rutgers University geochemist, Nathan Yee, co-investigator at the NASA-funded ENIGMA project that’s researching how proteins, “sophisticated nanomachines,” evolved to create life on earth. “That fact is so much more interesting when you consider what the earliest lifeforms on Earth were capable of doing.”
“I do indeed suspect there are other intelligent civilizations in the galaxy – we just need to look!” said astrophysicist Andrew Siemion, principal investigator for the Breakthrough Listen program and director of the Berkeley SETI Research Center, in an email to dailygalaxy.com.
The “Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.
NASA selected the Elysium Planitia region of the Red Planet as the landing site for its InSight lander –an 81-mile long, 17-mile-wide (130-kilometer-long, 27-kilometer-wide) landing ellipse on the western edge of a flat, smooth expanse of lava plain. The site-selection team focused on a band around the equator, where the lander’s solar array would have adequate sunlight to power its systems year-round and be safe enough for InSight to land and then deploy its solar panels and instruments without obstructions.
