This image shows a dotted line showing the known comets, asteroids, and similar objects in the solar system. Orange lines represent those that can cause global damage, while blue lines represent those that can cause damage in smaller areas. The Earth's orbit is shown as a green line. On January 15, 2013, a meteor that entered the Earth's atmosphere and exploded over Russia released 500 kilotons of energy. This […]
"Black holes are where God divides by zero" is a favorite joke in science and mathematics. Surprisingly, if you work inside the event horizon, strange things happen, like everything divides by zero. Besides being a great source of jokes, what exactly is a black hole? Technically, it's a region in spacetime where even light can't escape due to the gravitational pull of an object's extreme mass. A black hole […]
Studies indicate that a threat similar to the asteroid that struck Russia last year could occur at a much higher rate than previously thought. Scientists recommend implementing an early detection system. The asteroid that struck Russia on February 15th this year was 19 meters in size. When it entered the atmosphere and exploded, it had the force of 500,000 tons of TNT, and the shockwave it created was felt worldwide, twice that amount.
The search for dark matter has been ongoing for a long time, and it's safe to say that no interest in its very nature has yet been fully grasped. Numerous theories have been proposed, but none have been proven or substantiated. We see and feel its effects, but it's as if it doesn't exist. Gravitational theory has been able to explain many things, such as the orbit of planets around stars. But calculations […]
Astrophotographer Bill Snyder captured this image of the North America Nebula, a star-forming region. Snyder used an 18-hour exposure at the Heavenly Mirror Observatory in the Nevada Mountains of California. He used an Apogee U16 camera, a 17″ Planewave telescope, and Astrodon filters Ha5nm, OIII3nm, and SII5nm. The North America Nebula, also known as NGC 7000, […]
For 70 years, the question of why the solar wind, which creates the phenomenon we call the solar corona, is so much hotter than the Sun's surface, has remained unanswered. While the Sun's surface is 6,000 degrees Celsius, a few hundred kilometers above the surface is a million degrees Celsius. Dr. Michael Hahn and Daniel Wolf Savin of Columbia University's Astrophysics Laboratory in New York discovered that the corona […]
