Above: Yup, Leo might be on to something. A Leonid Kulik photo of a small snippet of the Tunguska aftermath.
The most recent issue of Free Astronomy Magazine (September-October 2019) is available for your reading and downloading pleasure at www.astropublishing.com (click the link to go directly to the issue).
With an excellent two-part feature (1 and 2) celebrating the 50th anniversary of the Apollo 11 Moon Landing now in publication history, FAM returns to its regularly-scheduled programming of excellent original content and selected reports from the planet's leading astronomy and space science institutions.
The science highlight for me this month is the article "The early days of the Milky Way revealed by Gaia," for which those with access can read the journal article at "Uncovering the birth of the Milky Way through accurate stellar ages with Gaia."
For those wanting a quick look at what the issue has to offer, the Table of Contents is reproduced below.
The web browser-readable version of the issue can be found here:
September-October 2019 – www.astropublishing.com/5FAM2019/
Jump right to the PDF download (20 MB): September-October 2019