Space Weather

Superflares On Solar-type Stars From The First Year Observation Of TESS

Superflares On Solar-type Stars From The First Year Observation Of TESS

Superflares, as strong explosions on stars, have been well studied with the progress of space time-domain astronomy. In this work, we present the study of superflares on solar-type stars using Transiting Exoplanet Survey Satellite ({\em{TESS}}) data.

Astrochemistry

Formation Of COMs Through CO Hydrogenation On Interstellar Grains

Formation Of COMs Through CO Hydrogenation On Interstellar Grains

Glycoaldehyde, ethylene glycol, and methyl formate are complex organic molecules that have been observed in dark molecular clouds.

Space Weather

Wind Morphology Around Cool Evolved Stars In Binaries: The Case Of Slowly Accelerating Oxygen-rich Outflows

Wind Morphology Around Cool Evolved Stars In Binaries: The Case Of Slowly Accelerating Oxygen-rich Outflows

The late stellar evolutionary phases of low and intermediate-mass stars are strongly constrained by their mass-loss rates.

Astrochemistry

Oxygen Line Opens New Perspective On The Far Universe

Oxygen Line Opens New Perspective On The Far Universe

A team of astronomers of Leiden University (the Netherlands) and the University of Texas (Austin, United States) has discovered a new way to map distant galaxies.

Extrasolar Planets

How The Solar System Got Its 'Great Divide,' And Why It Matters For Life On Earth

How The Solar System Got Its 'Great Divide,' And Why It Matters For Life On Earth

Scientists, including those from the University of Colorado Boulder, have finally scaled the solar system's equivalent of the Rocky Mountain range.

Meteorites, Asteroids, & Comets

Meteorite Contains The Oldest Material On Earth: 7-billion-year-old Stardust

Meteorite Contains The Oldest Material On Earth: 7-billion-year-old Stardust

Stars have life cycles. They're born when bits of dust and gas floating through space find each other and collapse in on each other and heat up. They burn for millions to billions of years, and then they die.

Astrochemistry

The Interstellar Thread Of Phosphorous, One Of Life's Building Blocks

The Interstellar Thread Of Phosphorous, One Of Life's Building Blocks

Phosphorus, present in our DNA and cell membranes, is an essential element for life as we know it. But how it arrived on the early Earth is something of a mystery.

TRAPPIST-1

Fundamental Limits From Chaos On Instability Time Predictions In Compact Planetary Systems

Fundamental Limits From Chaos On Instability Time Predictions In Compact Planetary Systems

Instabilities in compact planetary systems are generically driven by chaotic dynamics. This implies that an instability time measured through direct N-body integration is not exact, but rather represents a single draw from a distribution of equally valid chaotic trajectories.

comets

Water Production Rates And Activity Of Interstellar Comet 2I/Borisov

Water Production Rates And Activity Of Interstellar Comet 2I/Borisov

We observed the interstellar comet 2I/Borisov using the Neil Gehrels-Swift Observatory's Ultraviolet/Optical Telescope. We obtained images of the OH gas and dust surrounding the nucleus at four epochs spaced before and just after perihelion (-2.56 AU to 2.03 AU).

Astrochemistry

ExoMol Molecular Line Lists: Spectra Of Acetylene

ExoMol Molecular Line Lists: Spectra Of Acetylene

A new ro-vibrational line list for the ground electronic state of the main isotopologue of acetylene, 12C2H2, is computed as part of the ExoMol project.

Plant Biology

Space Saplings To Inspire The Next Newton

Space Saplings To Inspire The Next Newton

Eight saplings grown from pips taken from Isaac Newton's apple tree and flown in space by ESA astronaut Tim Peake are being planted across the UK and Europe.

More top stories from January.