The position, shape, and metallicity of a newly discovered, 2,000-light-year-long star-forming region indicate that the structure is most likely a tidal dwarf galaxy beginning to form.
The first neural network designed to classify supernovae based on their light curves is able to identify the supernova type with 75% accuracy on the night of the initial alert and with 89% accuracy 50 days later.
Applying the new technique of data-driven retrieval to previously collected spectra, astronomers determine the most likely parameters for the atmosphere of a brown dwarf: cloud-free and poor in metals like iron.
An analysis of craters on the second largest moon of Saturn suggests that the moon is not fully differentiated and its craters were likely altered by heating events after the impacts that created them.
Refined parameters for the interstellar neutral wind will be further tested by a future mission with a pivoting sensor, which will allow the instrument to track the interstellar wind as the spacecraft orbits the Sun.
More than a decade after its initial explosion, supernova SN 2004dk still glows at multiple wavelengths, suggesting that the expanding supernova remnant is interacting with circumstellar material.