Oceanic Research

New Approach Opens Window Into Life Below The Seafloor

New Approach Opens Window Into Life Below The Seafloor

New research may provide a breakthrough for scientists to understand life in the harshest of environments.

Climate

Researchers Find Oxygen Spike Coincided With Ancient Global Extinction

Researchers Find Oxygen Spike Coincided With Ancient Global Extinction

Two hundred fifty-two million years ago, much of life on planet Earth was dying. In an event that marked the end of the Permian period, more than 96 percent of the planet's marine species and 70 percent of its terrestrial life suddenly went extinct. It was the largest extinction in Earth's history.

Microbiology

Microbial Tracking-3 Experiment Sample Collection On The ISS

Microbial Tracking-3 Experiment Sample Collection On The ISS

Microbial Tracking-3 (MT-3) is a NASA Space Biology investigation cataloging and characterizing potential disease-causing microorganisms aboard the International Space Station (ISS).

Habitable Zones & Global Climate

Slowdown In Earth's Rotation Could Have Affected The Oxygen Content Of Its Atmosphere

Slowdown In Earth's Rotation Could Have Affected The Oxygen Content Of Its Atmosphere

Virtually all oxygen on Earth was and is produced by photosynthesis, which was invented by tiny organisms, the cyanobacteria, when our planet was still a rather uninhabitable place.

Climate

A Decline In CO2 Cooled Earth's Climate Over 30 Million Years Ago

A Decline In CO2 Cooled Earth's Climate Over 30 Million Years Ago

New research led by the University of Bristol demonstrates that a decline in the concentration of atmospheric CO2 played a major role in driving Earth's climate from a warm greenhouse into a cold icehouse world around 34 million years ago. This transition could be partly reversed in the next centuries due to the anthropogenic rise in CO2.

SETI

A Machine-Learning-Based Direction-of-Origin Filter for the Identification of Radio Frequency Interference in the Search for Technosignatures

A Machine-Learning-Based Direction-of-Origin Filter for the Identification of Radio Frequency Interference in the Search for Technosignatures

Radio frequency interference (RFI) mitigation remains a major challenge in the search for radio technosignatures. Typical mitigation strategies include a direction-of-origin (DoO) filter, where a signal is classified as RFI if it is detected in multiple directions on the sky.

Space Life Science

Astronauts Initiate Tardigrade Experiment on ISS

Astronauts Initiate Tardigrade Experiment on ISS

On July 13, 2021, the Cell Science-04 (CS-04) mission's first science operation was successfully conducted onboard the ISS. The on-orbit activities included setup of the Life Sciences Glovebox and the injection of tardigrades into the flow paths of the Bioculture System research platform.

Biosignatures & Paleobiology

NOAA Satellites See Bioluminescence From Orbit

NOAA Satellites See Bioluminescence From Orbit

A recent study led by the Cooperative Institute for Research in the Atmosphere (CIRA), a NOAA partner located at Colorado State University in Ft. Collins. Co., found that satellites from NOAA's Joint Polar Satellite System (JPSS) can detect a fascinating nocturnal phenomenon called "milky seas" from their perch about 500 miles up.

Extremeophiles and Extreme Environments

Microbes Feast On Crushed Rock In Subglacial Lakes Beneath Antarctica

Microbes Feast On Crushed Rock In Subglacial Lakes Beneath Antarctica

Pioneering research has revealed the erosion of ancient sediments found deep beneath Antarctic ice could be a vital and previously unknown source of nutrients and energy for abundant microbial life.

Astrochemistry

Two Asteroids Discovered To Have Complex Organic Matter

Two Asteroids Discovered To Have Complex Organic Matter

Two asteroids (203 Pompeja and 269 Justitia) have been discovered with a redder spectrum (※1) than any other object in the asteroid belt between Mars and Jupiter.

Extrasolar Planets

Asymmetry and Variability in the Transmission Spectra of Tidally Locked Habitable Planets

Asymmetry and Variability in the Transmission Spectra of Tidally Locked Habitable Planets

Spatial heterogeneity and temporal variability are general features in planetary weather and climate, due to the effects of planetary rotation, uneven stellar flux distribution, fluid motion instability, etc.

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