The Eldest Sibling of Our Milky Way
Gas before forming a disk galaxy: To be cool, or to be hot, that is the question.
A Gravitationally Unstable Protoplanetary Disk
New observations of 13C17O gas in HL Tau reveal a massive, gravitationally unstable protoplanetary disk.
Astronomical Observatories and Indigenous Communities in Chile
Continuing our series on the historical interaction between Western astronomy and Indigenous communities, this post discusses ALMA and other observatories in Chile.
Moonetesimals likely form relatively quickly
The absence of dusty circumplanetary disks around young giant planets suggests moonetesimals grow relatively quickly.
What We Don’t Know About Protoplanetary Disks
Protoplanetary disks may be the birth place of planets, but they also throw astronomers for a loop in today’s paper.
A protoplanetary disk on its side
What does a disk around a binary star look like? One possibility, recently observed around a young star for the first time, is that it is flipped on its side—its rotation is perpendicular to the orbit of the binary system!