Science July 7, 2021

Small Amount of Lithium Production in Classical Nova

A new study of lithium production in a classical nova found a production rate of only a couple of percent that seen in other examples. This shows that there is a large diversity within classical novae and implies that nova explosions alone cannot explain the amount of lithium seen in the current Universe. This is an important result for understanding both the explosion mechanism of classical novae and the overall chemical evolution of the Universe.

Science July 2, 2021

Observation, Simulation, and AI Join Forces to Reveal a Clear Universe

Japanese astronomers have developed a new artificial intelligence (AI) technique to remove noise in astronomical data due to random variations in galaxy shapes. This is a powerful new tool for analyzing big data from current and planned astronomy surveys.

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Science June 29, 2021

A New Type of Supernova Illuminates an Old One

A worldwide team of astronomers has discovered evidence for a new type of stellar explosion -- an electron-capture supernova. While this type has been theorized for over 40 years, this is the first observed example. These findings provide clues to the precursor of the Crab Nebula, a supernova observed by cultures all over the world in 1054.

Science June 11, 2021

ALMA Discovers Earliest Gigantic Black Hole Storm

Researchers using the ALMA discovered a titanic galactic wind driven by a supermassive black hole 13.1 billion years ago. This is the earliest-yet-observed example of such a wind to date and is a telltale sign that huge black holes have a profound effect on the growth of galaxies from the very early history of the Universe.

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Science May 21, 2021

ALMA Discovers the Most Ancient Galaxy with Spiral Morphology

Analyzing data obtained with the Atacama Large Millimeter/submillimeter Array (ALMA), researchers found a galaxy with a spiral morphology by only 1.4 billion years after the Big Bang. This is the most ancient galaxy of its kind ever observed.

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Science May 14, 2021

Charting the Expansion History of the Universe with Supernovae

An international research team analyzed a database of more than 1000 supernova explosions and found that models for the expansion of the Universe best match the data when a new time dependent variation is introduced.

Science May 10, 2021

Star Formation Triggered by Cloud–Cloud Collisions

Japanese researchers have found that collisions of gas clouds floating in space precipitate the birth of star clusters.

Science May 6, 2021

A New Window to See Hidden Side of Magnetized Universe

New observations and simulations show that jets of high-energy particles emitted from the central massive black hole in the brightest galaxy in galaxy clusters can be used to map the structure of invisible inter-cluster magnetic fields. These findings provide astronomers with a new tool for investigating previously unexplored aspects of clusters of galaxies.

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Science April 22, 2021

ALMA Discovers Rotating Infant Galaxy with Help of Natural Cosmic Telescope

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers found a rotating baby galaxy 1/100th the size of the Milky Way at a time when the Universe was only seven percent of its present age.

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Science April 16, 2021

Surprise Twist Suggests Stars Grow Competitively

A survey of star formation activity in the Orion Nebula Cluster found similar mass distributions for newborn stars and dense gas cores, which may evolve into stars. Counterintuitively, this means that the amount of gas a core accretes as it develops, and not the initial mass of the core, is the key factor in deciding the final mass of the produced star.