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Illustration of meteorite shower heading for earth
All RNA and DNA Base Types Are Found in Meteorites, Study Claims
The discovery could add weight to the hypothesis that the building blocks of life on Earth originally came from space, but some scientists note the possibility of contamination.
All RNA and DNA Base Types Are Found in Meteorites, Study Claims
All RNA and DNA Base Types Are Found in Meteorites, Study Claims

The discovery could add weight to the hypothesis that the building blocks of life on Earth originally came from space, but some scientists note the possibility of contamination.

The discovery could add weight to the hypothesis that the building blocks of life on Earth originally came from space, but some scientists note the possibility of contamination.

extraterrestrial life
Mars, astronomy, space, extraterrestrial life, extremophile, liquid water, south pole, radio waves, radar, satellite
Discovery of More Ponds on Mars Hints at Possibility of Life
Amanda Heidt | Sep 29, 2020 | 3 min read
The three smaller water bodies join a previously discovered lake buried beneath ice at the red planet’s south pole.
Fake News: Mars Edition, circa 1877
Diana Kwon | Jan 1, 2018 | 2 min read
Giovanni Schiaparelli’s maps of Mars sparked the belief that intelligent life exists on the planet.
Search for Life on the Red Planet
Diana Kwon | Dec 1, 2017 | 10+ min read
Growing evidence points to a once-habitable world—and recent findings suggest that life could exist on Mars today.
astronaut on red landscape
Infographic: The Hazards of Life on Mars
Diana Kwon | Nov 30, 2017 | 1 min read
High levels of radiation, among other health risks, challenge the future colonization of the Red Planet.
Image of the Day: Microbes on Fake Mars
Aggie Mika | Oct 18, 2017 | 1 min read
By simulating the structure and composition of Mars’s rocky materials, scientists observe how the metal-eating, extreme environment–inhabiting microbe Metallosphaera sedula could alter extraterrestrial environments.
Microbes Persist in Super-Salty Conditions
Tanya Lewis | Jun 23, 2016 | 3 min read
Extremophiles can thrive on perchlorates and metabolize carbon monoxide, researchers report.
Most Earth-like Planet Found
Kerry Grens | Jul 27, 2015 | 1 min read
Kepler-452b revolves around a sun much like our own.
Stubbornly Persistent
Mary Beth Aberlin | Feb 1, 2015 | 3 min read
Microorganisms continually challenge our assumptions of what life can achieve.
Marks of Martians?
Molly Sharlach | Dec 18, 2014 | 2 min read
NASA’s Curiosity rover finds chemical signatures that point to the possibility of life on Mars.
Saturn’s Icy Moon Harbors Ocean
Bob Grant | Apr 4, 2014 | 2 min read
A body of liquid water beneath Enceladus’s surface makes the tiny moon a potentially hospitable home for extraterrestrial life.
Hospitable Lake Found on Mars
Kerry Grens | Dec 10, 2013 | 2 min read
The possibility of Martian life gets a boost from evidence of an ancient freshwater lake.
Contributors
Kate Yandell and Chris Palmer | Aug 1, 2013 | 3 min read
Meet some of the people featured in the August 2013 issue of The Scientist.
Curiosity Finds Clay on Mars
Kate Yandell | Mar 14, 2013 | 2 min read
NASA’s rover has identified clay in its first drilled sample, signaling that the planet once had a wet and hospitable environment.
Searching for Alien Genomes
Jef Akst | Oct 21, 2012 | 2 min read
J. Craig Venter plans to develop a machine to find and sequence DNA on Mars, but another genomics mogul, Jonathan Rothberg, may beat him to it.
Water Once Ran on Mars
Jef Akst | Oct 1, 2012 | 1 min read
The Curiosity rover discovers pebbles that were likely formed by ancient streams on the Red Planet.
Martian Microbes?
Jef Akst | Dec 16, 2011 | 1 min read
Researchers discover microbes in Oregon thriving in extreme, Mars-like conditions.
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