Astrobites - a daily journal of astronomy written by graduate students in the field. They present one brief paper a day in a format that can be understood by undergraduate physical science students.
AAS Nova - an online newsletter from the AAS that highlights research from their professional journals.
Astronomy Magazine - a magazine for amateur astronomers that provides expert science reporting, spectacular color photography, observing tips, and telescope reviews.
Sky & Telescope - a magazine about the science and hobby of astronomy. It publishes articles on new findings in astronomy, observing projects, telescopes, astronomical photography and astronomical observatories.