NASA's Extreme Planet Makeover
This is my “Super Earth,” about 2.75 times the volume of our planet, orbiting very close to a wimpy Class M star. (Thanks for the link, Jefe.)
This is my “Super Earth,” about 2.75 times the volume of our planet, orbiting very close to a wimpy Class M star. (Thanks for the link, Jefe.)
One blogging convention that I really like involves making corrections by striking out mistakes, bolding corrections, and adding a parenthetical note or a footnote explaining the change. But when a journalist makes a mistake on Twitter, is it more ethical to delete the post entirely (thus keeping a mistake from spreading) or is it better…
(First published 27 May 2020, when I found it in my “drafts” folder.) In an article on consumerism in role-playing computer games, Garrelts explores a history that leads back to Adventure and Zork: “At this stage, while there were objects that could be manipulated that had use-value, there were no developed economies; in fact, there…