Solving a Stellar Abundance Problem (with a Little Help from Our Oceans)
How can the behavior of Earth’s oceans help us understand chemical abundances in red-giant stars?
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Clues from Hubble a Year After a Neutron-Star Merger
More than a year after the first confirmed neutron-star merger, we’re still learning from new observations.
Where Did All the Dark Matter Go?
Astrobites reports on the second detection of a galaxy apparently lacking in dark matter, which has reopened the debate about dark-matter-deficient galaxies.
Featured Image: How Gas Affects the Structure of Galaxies
These beautiful images from a simulation of a Milky-Way-like galaxy capture how gas affects a galaxy’s formation and evolution over time.
A Hazy Day Around TRAPPIST-1?
A new study explores whether the skies of the TRAPPIST-1 family of planets are likely cloudy or clear.
Holding Together a Speeding Cloud
High-velocity clouds observed in our galaxy’s halo pose a conundrum: given their tenuous nature and large speeds, why haven’t they been ripped apart?
How to Find Exoplanets and “Listen” to Their Stars with TESS
Astrobites reports on what we can gain when we use TESS not only to discover new exoplanets, but also to ‘listen’ to their host stars.
Insights from MU69’s (Lack of) Craters
Predictions of crater counts on 2014 MU69’s surface were made in December, before the New Horizons flyby. Will they prove correct? And what can we learn from them?
Can Magnetic Fields Help Planetesimals Form?
The inner regions of protoplanetary disks have strong magnetic fields. What effect does the presence of a magnetic field have on planet formation?
Dwarf Galaxy or Giant Globular Cluster?
You might think that we’d already discovered all the large clusters of stars orbiting our galaxy. Surprisingly, there are still detections to be made — though we’re not always sure what we’re looking at.
Where’s Lucy Going? Studying Asteroid Mission Targets
Astrobites reports on work preparing for Lucy, a new mission that will fly by multiple asteroids near Jupiter in the late 2020s.
Featured Image: Tracking Motions of Local Galaxies
Gaia measurements of thousands of stars are helping us to pin down the motions (and future collisions!) of the galaxies around us.