StenBlog
Dr. Sten Odenwald NASA/HEAT Artistic rendering of the Parker encounter. (Credit: ASA/Johns Hopkins APL/Steve Gribben) Here is a handy table that summarizes the circumstances for the Parker Solar Probe perihelia since 2018. Nothing fancy – just a one-stop-shop for those of you who want...
StenBlog
The Early Universe is Running out of Supermassive Black holes. As the Webb Space Telescope continues to find supermassive blackholes (SMBH) in the time after the Dark Ages, there has been a significant down turn in their masses. Now the most common SMBHs earlier than one billion years ABB are...
StenBlog
The GRACE Follow-On spacecraft launched into orbit in May 2018. Credit: NASA/Bill Ingalls The orbit insertion velocity near the Earth’s surface is practically the same as the Earth escape velocity of 11.2 kilometers per second, or 25,805 miles per hour. Even at an altitude of 200 kilometers,...
Jon Danzig
The word Brexit was invented in 2012. It’s when I started to campaign against it, seriously concerned that it could really happen.But what did I do before that?For those who are interested to know, BBC Three Counties Radio broadcast an extended interview with me about my career as a...