General Carnivals of Space #623 & #624 – Urban Astronomer & Everyday Spacer August 13, 2019 TopSpacer The Urban Astronomer hosts Carnival of Space #623. And the Everyday Spacer hosts the Carnival of Space #624. Astronomers find indications that dark energy may vary over time. Credits: Chandra X-Ray Observatory via Urban Astronomer. Share this:FacebookTwitterLinkedInTumblrMorePinterestPrintReddit Related