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Artist impression of a strand of DNA.
Life’s Origins in a Mixed-Up WorldSept. 16, 2019
The sun sets on Mauna Kea as the twin Kecks prepare for observing.
Spotting Exoplanets through the HazeSept. 16, 2019
This National Weather Service photo depicts a turbulent sea surface in the North Pacific during a storm.
Rethinking Sulfide in the Ancient OceansSept. 12, 2019
A laminated microbial community located within precipitated gypsum at Guerrero Negro, Baja California Sur, Mexico. The colored bands, and precipitated gypsum above them, are about 3 centimeters thick.
Studying Microbial Mats to Understand Ancient BiosignaturesSept. 11, 2019
Marc Kaufman, Abigail Allwood, Dawn Sumner, Mike Zawaski, and Joel Hurowitz (left to right) in Nuuk, Greenland, before heading into the field.
On the Ground in GreenlandSept. 10, 2019
Diagram of a simple peptide chain. Peptides are compounds made up of two or more amino acids linked together. Different amino acid residues are represented by 'R.'
Sorting out Peptide MixturesSept. 10, 2019
An artist's conception symbolically represents complex organic molecules, known as polycyclic aromatic hydrocarbons (PAHs), seen in the early universe. The large molecules, comprised of carbon and hydrogen, are thought to be among life's building blocks.
Irradiating Polycyclic Aromatic HydrocarbonsSept. 7, 2019
Artist impression of the early Earth.
Cyanide in the Warm Little Pond: A Clue to Phosphate AvailabilitySept. 6, 2019
Betül Kaçar is an assistant professor at the University of Arizona, and a pioneer in the field of paleogenomics — using genetic material to dive back deep into the ancestry of important compounds.
Exploring Early Earth by Using DNA As A FossilSept. 5, 2019
Image for Article 1
Clues to Chromium Isotopes on the Ocean FloorSept. 4, 2019
This composite image looking toward the higher regions of Mount Sharp was taken on September 9, 2015, by NASA's Curiosity rover. In the foreground - about 2 miles (3 kilometers) from the rover - is a long ridge teeming with hematite, an iron oxide.
Request for Input on Planetary Protection Policies for Mars (MEPAG)Sept. 2, 2019
You Can Name the Mars 2020 Rover!
You Can Name the Mars 2020 Rover!Aug. 29, 2019
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Earth Water from Space.
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Concept Art of a Mars Mission.
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DNA Traveling through Space.
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