In 1916, just a year after Albert Einstein published his general theory of relativity, Karl Schwarzschild used mathematical calculations to show this: If enough mass were packed into a very small volume, then this dense enough mass would create a region where the gravitational force is so strong that nothing, including light, could escape from … Read more
For decades, nuclear activity has been the center of proposals for aeronautical engineering and government studies, always promising, never leaving the laboratory. That changes in 2028. NASA has announced that it will launch the Space Reactor-1 Freedom, described by the agency as the first nuclear-powered interplanetary spacecraft, on its way to Mars before the end … Read more
The first mission of the NASA crew of the Artemis lunar program can begin in a few days, with the launch window to be opened on April 1, and while the preparations continue, the space agency is focusing on its mission to establish a human presence on the moon. NASA has announced major changes to … Read more
Spawning season has begun for Pacific herring (A group of pallas) in the waters of British Columbia, Canada. From mid-February to early May each year, thousands of small silver fish congregate in the shallows off the coast of Vancouver Island and create a spectacle that can sometimes be seen by satellites. The sheltered waters of … Read more
The flame goes out, and something else in the room changes with it. Not because the matter has disappeared, but because the form has disappeared. The candle wax remains, the heat dissipates, and the air carries what was once a steady glow. What is missing is the pattern that held them all together. That same … Read more