Highlights from AAS Nova: 17-30 January 2021

AAS Nova provides brief highlights of recently published articles from the AAS journals, i.e., The Astronomical Journal (AJ), The Astrophysical Journal (ApJ), ApJ Letters, ApJ Supplements, The Planetary Science Journal, and Research Notes of the AAS. The website's intent is to gain broader exposure for AAS authors and to provide astronomy researchers and enthusiasts with summaries of recent, interesting research across a wide range of astronomical fields.

The following are the AAS Nova highlights from the past two weeks; follow the links to read more, or visit the AAS Nova web page for more posts.

29 January 2021
Peering at the Surface of a Nearby Moon
Among Jupiter’s Galilean moons, icy Europa or volcanic Io often take the spotlight — but their sibling moon Ganymede has plenty of secrets to share.

27 January 2021
A New Assessment of Supermassive Black Holes and Our Universe
A recent census of brightly accreting supermassive black holes reveals more about the role they played in the evolution of our universe.

26 January 2021
Shift-Stacking the Night Away
Astrobites reports on a clever technique to combine TESS full-frame images in the search for Planet Nine.

25 January 2021
Featured Image: A Multiple System Caught in Formation
How do systems of multiple stars form in the dense cores inside molecular clouds? New ALMA images provide a glimpse.

22 January 2021
Holding the System of HR 8799 Together
What does the future hold for the multiplanetary system of HR 8799 — can it remain stable?

20 January 2021
Measuring Solar Eruptions with a Rare Alignment
In 1998, a mass of plasma erupted from the Sun. Data from two perfectly aligned spacecraft now tell its story.

19 January 2021
Hunting in Total Darkness: The Search for Dust-Obscured Galaxies at Cosmic Dawn
We know that we don’t know everything about the first galaxies. Astrobites reports on a further deepening of the mystery with new radio observations.