This illustration compares the size of our own Milky Way galaxy to gargantuan galaxy LEDA 1313424, nicknamed the Bullseye. The Milky Way is about 100,000 light-years in diameter, and the Bullseye is almost two-and-a-half times larger, at 250,000 light-years across. NASA, ESA, Ralf Crawford (STScI)

Many of us are familiar with several types of galaxies, but what the heck was this?

Given enough time, Earth (4.543 billion years) and Mars (4.603 billion years) have created some interesting topology thanks to the effects of wind, erosion and other meteorologic and geologic forces, and this is what you get. The sands of time can be quite creative.

Taken by Paul Martin on January 1, 2025 @ Fermanagh, Northern Ireland

Many throughout the world were able to experience another great evening of auroras on New Year’s Day 2025. However, there’s a catch, some actually saw what are known as SAR arcs. These were first discovered in 1956. Researchers weren’t sure what they were and gave them the misleading name, Stable Auroral Red arcs.

Today I am sharing my current Neil deGrasse Tyson “shorts” playlist from YouTube. Within it are his commentaries on everything from Newton to neutrinos and everything in between. While heavily science driven (well, of course), Neil often comments on everyday …

Neil deGrasse Tyson Playlist Read more »

The Challenger disaster was a devastating blow and prompted President Ronald Reagan to convene fourteen extraordinary specialists to investigate the cause of the accident. The result was the Rogers Commission, named for its chairman William P. Rogers, and included Neil Armstrong, Sally Ride, physics Nobel laurate Richard Feynman, and mechanical engineer, Roger M. Boisjoly of Moron Thiokol, who had warned NASA of the uncertainty of the O-ring and its possible failure, which unfortunately came to fruition.

I remember when Voyagers 1 and 2 were launched by NASA in separate months in the summer of 1977 from Cape Canaveral, Florida. As originally designed, they were to conduct closeup studies of Jupiter and Saturn, Saturn’s rings, and the larger moons of the two planets. To accomplish their two-planet mission, the spacecraft were built to last five years. But as we see, they achieved all their objectives and then some!