Extinction events

Climate Change From Nuclear War's Smoke Could Threaten Global Food Supplies, Human Health

Climate Change From Nuclear War's Smoke Could Threaten Global Food Supplies, Human Health

Nuclear war would cause many immediate fatalities, but smoke from the resulting fires would also cause climate change lasting up to 15 years that threatens worldwide food production and human health, according to a study by researchers at Rutgers University, the National Center for Atmospheric Research and other institutions.

Geobiology

Did the Earth Tip On Its Side 84 Million Years Ago?

Did the Earth Tip On Its Side 84 Million Years Ago?

Hold on to your hats, because scientists have found more evidence that Earth tips over from time to time.

Genomics and Cell Biology

Njordarchaeota, A New Candidate For A Sister Group To Eukaryotes

Njordarchaeota, A New Candidate For A Sister Group To Eukaryotes

The emergence of eukaryotic cells is considered as a critical biological evolutionary event on Earth.

Astrochemistry

Efficient Formation Pathway Of Methyl Formate: The Role Of OH Radicals On Ice Dust

Efficient Formation Pathway Of Methyl Formate: The Role Of OH Radicals On Ice Dust

Three structural isomers of the C2H4O2 molecule, namely, methyl formate (MF; HCOOCH3), acetic acid (AA; CH3COOH), and glycol aldehyde (GA; HOCH2CHO), have attracted considerable attention as targets for understanding pathways towards molecular complexity in the interstellar medium (ISM).

Geobiology

Retention Of Water In Terrestrial Magma Oceans And Carbon-rich Early Atmospheres

Retention Of Water In Terrestrial Magma Oceans And Carbon-rich Early Atmospheres

Massive steam and CO2 atmospheres have been proposed for magma ocean outgassing of Earth and terrestrial planets.

Astrochemistry

Discovery Of Two Isomers Of Ethynyl Cyclopentadiene In TMC-1: Abundances of CCH And CN Derivatives Of Hydrocarbon Cycles

Discovery Of Two Isomers Of Ethynyl Cyclopentadiene In TMC-1: Abundances of CCH And CN Derivatives Of Hydrocarbon Cycles

We report the detection of two isomers of ethynyl cyclopentadiene (c-C5H5CCH), namely 1- and 2-ethynyl-1,3-cyclopentadiene, in the direction of TMC-1.

Titan

ASTrAEUS: An Aerial-Aquatic Titan Mission Profile

ASTrAEUS: An Aerial-Aquatic Titan Mission Profile

Key questions surrounding the origin and evolution of Titan and the Saturnian system in which it resides remain following the Cassini-Huygens mission.

Astrochemistry

Formation Of Complex Organic Molecules In Hot Molecular Cores Through Nondiffusive Grain-surface And ice-mantle Chemistry

Formation Of Complex Organic Molecules In Hot Molecular Cores Through Nondiffusive Grain-surface And ice-mantle Chemistry

A new, more comprehensive model of gas-grain chemistry in hot molecular cores is presented, in which nondiffusive reaction processes on dust-grain surfaces and in ice mantles are implemented alongside traditional diffusive surface/bulk-ice chemistry.

Ceres

Traces of Ceres' Icy Crust Found at Occator Crater

Traces of Ceres' Icy Crust Found at Occator Crater

Anomalies in the distribution of hydrogen at Occator crater on the dwarf planet Ceres reveal an icy crust, says a new paper led by Tom Prettyman, a Senior Scientist at the Planetary Science Institute.

Titan

Titan's River Maps May Advise Dragonfly's Sedimental Journey

Titan's River Maps May Advise Dragonfly's Sedimental Journey

With future space exploration in mind, a Cornell-led team of astronomers has published the final maps of Titan's liquid methane rivers and tributaries - as seen by NASA's late Cassini mission - so that may help provide context for Dragonfly's upcoming 2030s expedition.

Astrobiology (general)

The Fine-Tuning of the Universe for Life

The Fine-Tuning of the Universe for Life

When a physicist says that a theory is fine-tuned, they mean that it must make a suspiciously precise assumption in order to explain a certain observation.

More top stories from October.