In this week's questions and answers show, I talk about supermassive black hole nucleosynthesis, the threat of grabby aliens and why would we ever bother building Von Neumann Probes. 00:00 Start 01:00 Are elements being formed in quasars? 03:50 What will the coverage of the Moon landings be ...

NASA’s Ingenuity Mars helicopter is seen here in a close-up taken by Mastcam-Z, a pair of zoomable cameras aboard the Perseverance rover. This image was taken on April 5, the 45th Martian day, or sol, of the mission. A secondary set of anaglyph images are included for use with red-blue 3D ...

Taken Feb. 22, 2021, this image from the Mastcam-Z instrument on NASA’s Perseverance rover shows the first target for analysis by the rover’s SuperCam instrument. The target rock is approximately 29 inches (73 centimeters) across its longest axis. On the left side of the image, rocks ...