Extrasolar Planets

The Paradox Of Youth For ALMA Planet Candidates

The Paradox Of Youth For ALMA Planet Candidates

Recent ALMA observations indicate that the majority of bright protoplanetary discs show signatures of young moderately massive planets.

Astrochemistry

Chemicals on Comet Comet 67P Suggest Composition Of Its Birthplace

Chemicals on Comet Comet 67P Suggest Composition Of Its Birthplace

Observations from ESA's Rosetta spacecraft are shedding light on the mysterious make-up of Comet 67P/Churyumov-Gerasimenko, revealing a mix of compounds thought to be essential precursors to life - including salts of ammonium and a particular type of hydrocarbons.

Astrochemistry

Non-thermal Desorption Of Complex Organic Molecules: Cosmic-ray Sputtering Of CH3OH Embedded In CO2 Ice

Non-thermal Desorption Of Complex Organic Molecules: Cosmic-ray Sputtering Of CH3OH Embedded In CO2 Ice

Methanol ice is embedded in interstellar ice mantles present in dense molecular clouds. We aim to measure the sputtering efficiencies starting from different ice mantles of varying compositions experimentally, in order to evaluate their potential impact on astrochemical models.

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.

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