Space Weather
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
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
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
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
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
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
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
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
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
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
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.
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