Old-fashioned astronomers (II) Published on March 22, 2022March 21, 2022 by fivecolorssandt@icloud.com Roger Griffin Know your data! Read More
Black hole ironies Published on May 19, 2020May 18, 2020 by fivecolorssandt@icloud.com Bright and dark, near and far We point out some astronomical ironies. Read More
