The old way to
search for microbial life in the ocean, he explains, was to isolate individual species by growing them in laboratory cultures.
For example, one popular way to
look for microbial life is to scoop up some soil, water, or even air, and extract all the DNA it contains.
By examining peak ring rocks closely, they hope to test models of crater formation and determine whether the crater itself was one of the first
habitats for microbial life after the impact.
These newly discovered lakes are a potential
habitat for microbial life and may assist scientists in the search for life beyond earth.
NASA's Mars Curiosity rover completed a Martian year — 687 Earth days — on June 24, having accomplished the mission's main goal of determining whether Mars once offered environmental conditions
favorable for microbial life.
Because such chemistry provides energy
for microbial life on Earth, the discovery makes Enceladus the top candidate for hosting life elsewhere in the solar system — besting even Jupiter's Europa, another icy moon with an ocean.
«An outstanding question has been whether or not the environment at the base of the ice sheet is actually
suitable for microbial life to persist,» explains Brent Christner, a microbiologist at Louisiana State University in Baton Rouge.
If these shallow pools existed at least 700 million years earlier — or when the oceans of Mars began to evaporate — they may have bridged a crucial
gap for microbial life on the planet.
Previously, the world's oldest
evidence for microbial life on land came from 2.7 - 2.9 billion - year - old deposits in South Africa containing organic matter - rich ancient soils.
Wetness and warmth somehow lurked below, offering the
possibility for microbial life to arise and thrive — and the plumes were a window into that netherworld.
You are dealing on Mars with what I call extremophile extreme environments on steroids,» she says, «and you don't look
for microbial life with telescopes from Mars orbit.»
In this role, she works with many collaborators to facilitate implementing superresolution microscopy into their research programs as well as developing novel
techniques for microbial live cell imaging.
Dione's ocean has probably survived for the whole history of the moon, and thus offers a long - lived habitable
zone for microbial life.
Curiosity is climbing a layered Martian mountain and finding chemical evidence of how ancient lakes and wet underground environments changed, billions of years ago, in ways that affected their potential
favorability for microbial life.
Scientists announced Thursday that measurements from NASA's Cassini spacecraft detected hydrogen gas, a key energy
source for microbial life, in a plume gushing from a vast liquid water ocean buried beneath the icy shell of Saturn's moon Enceladus.
The combination of the longevity of groundwater and its acceptable acidity greatly increases the
window for microbial life to form on young Mars.
Finding boron on Mars suggests that the groundwater present in Gale Crater was most likely at a temperature and acidity
suitable for microbial life.
The dramatic landing of the Curiosity rover in 2012 (viewed by at least 3.2 million people on the Internet alone) spurred the funding of another rover to search
for microbial life on the planet, scheduled to launch in 2020.
The mission is investigating evidence about how and when ancient environmental conditions in the area evolved from freshwater settings favorable
for microbial life, if Mars has ever hosted life, into conditions drier and less habitable.
Crew members wore treated garments and slept on treated bedsheets, after which Sierra - Sastre tested
them for microbial life including aerobic bacteria, Staphylococcus aureus, mold, and yeast.
The team will then leave the lake water to rise about 50 meters into the hole and freeze; when they return next winter, they will be able to retrieve this core and examine
it for microbial life.
Cassini took nearly a half - million images during its mission, which included more than 13 years in orbit around Saturn, a tour that repeatedly took the probe by the moons Titan and Enceladus, two places scientists are eager to send another spacecraft in the search
for microbial life.
Analysis of that sample showed that early Mars offered environmental conditions favorable
for microbial life, including the key elemental ingredients for life and a chemical energy source such as used by some microbes on Earth.
NASA's robotic explorer is examining evidence about ancient Martian environmental conditions that were favorable
for microbial life.