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" ... But finding such spots is important to both astrobiologists looking for signs of past or even present life, as well as for future human Mars explorers who will need water. ... "
" ... But questions about the essence of life; how it starts; and where else it might be in the galaxy remain astronomy’s go-to topics these days. Thus, I turned to three prominent astrobiologists for perspective. ... "
" ... It’s the ultimate nightmare of astrobiologists: that there’s a fascinating history of life to uncover on another world, but we’ll contaminate it with our own organisms before we ever learn the true history of life on that world. In the worst case scenario, it could be the case that was surviving simple life on Mars of Martian origin, but that Earth life arrived and out-competed it, driving it to a rapid extinction. This very real, healthy fear is why we’re frequently so conservative, from a biological perspective, when we explore other planets and foreign worlds. ... "
" ... NASA astrobiologists Laurie Barge and Erika Flores mixed up a primordial ocean in a bottle: an alkaline brew of minerals, deoxygenated water, iron hydroxide, and ammonia and pyruvate -- two chemicals necessary for the reactions that produce amino acids, the basic building blocks of proteins -- heated to 158 degrees Fahrenheit. That's what Earth's deep oceans were like around 4 billion years ago, when the right molecules happened to come together in just the right ways to produce the first cells. Biologists still haven't pieced together all the details of how the first cells emerged from chemical reactions, but deep-sea hydrothermal vents are one of the most likely incubators for the first life on Earth. In a dark, sunless sea, a vent provides the energy needed to fuel the chemistry of life. ... "
" ... The deleterious effects of supermassive black holes, like Sagittarius A* (SAG A*) at the center of our own Milky Way, have long been the subject of debate among planetary scientists and astrobiologists. But for the first time, European researchers have used real data to study the potential effects of nearby AGN on real planetary atmospheres. ... "