Swapped in the new @zwoasi asi174mm-mini to guide on the 8” EdgeHD, with a Celestron OAG. So far, this is promising (still gusts here, and a bright moon.) I removed the 80/400 guide scope, rebalanced the cem70, and we’re off and running! #Astrophotography

What’s happening on Mars? 🔴 NASA’s robotic explorers are on the move and making discoveries on the Red Planet. From interesting images to new destinations, see what ARCHIVED - NASA's Perseverance Mars Rover, ARCHIVED - Curiosity Rover and the #MarsHelicopter are up to in our latest Mars Report.

In 2003, Adam Nieman created this image, illustrating the volume of the world’s oceans and atmosphere (if the air were all at sea-level density) by rendering them as spheres sitting next to the Earth instead of spread out over its surface [read more: buff.ly/2AgpXY9]

The Mandelbulb is a 3-dimensional fractal that can be constructed as a Mandelbrot set in 4 dimensions using quaternions and bicomplex numbers. This is one spotted in the wild [source + tutorial by Machina Infinitum: buff.ly/3RQoACG]