AAVSO's free webinar is from 2:00 pm to about 3:00 pm ET, and features Dr. David Whelan (Austin College) presenting on "Classifying Algol C, the Non-Eclipsing Member of the beta Persei System."

The SKA Science conference 2021, “A precursor’s view of the SKA sky”, is a fully virtual event that has been designed to allow participation from all countries and timezones. The format of the meeting will include...

Gas in the halos of galaxies dominates the universe's baryon budget, traces its dark-matter potential wells, and supplies the fuel for star formation. Circumgalactic gas has also long been suspected to regulate galaxy...