Blazars form extremely active cores of some galaxies. They consist of a supermassive black hole with a dense, whirling disk of material around it, which generates the energy for near-lightspeed jets of material aimed perpendicular to the disk. If one of those jets is aimed toward Earth, it ...
The word "year," is normally a unit of time, but light-years measure distance. M. Aurelius/Shutterstock A light-year is a way of measuring astronomical distances in space. That doesn't make much sense because "light-year" contains the word "year," which is normally a unit of time. ...
Scientists do not completely understand why the speed of these stars is so high. But many believe the reason is that much of the universe is made up of something called "dark matter". Groups of stars called galaxies, such as the Milky Way, might even consist of ninety per cent dark ...
Astronomers have measured the abundance of helium throughout our galaxy and in other galaxies as well. Helium has been found in old stars, in relatively young ones, in interstellar gas, and in the distant objects known as quasars. Helium nuclei have also been found to be constituents of ...
that resemble a pattern. Constellations are areas of the sky where we have broken the sky into parts. All the stars in the constellations are withinthe Milky Way. A galaxy is a large collection of stars containing billions or trillions of stars. Galaxies exist outside our own Milky Way ...
do stand out even in relatively light polluted skies. M81 looks like a small elliptical fuzzy object and M82 appears as a small cigar-shaped object. I am able to see these galaxies because they are relatively bright, especially their cores. It was very exciting to see both of them at the...
First of all we know it exists: modified gravity models cannot explain the spatial segregation between the regions where most of the mass is and where most of the visible matter is in the "bullet cluster" (1) (a cluster formed by two colliding galaxies). In this cluster, the regions ...
When it comes to photographingdeep-sky objectsusing a camera and telescope, there are three main types of targets to photograph. These are Nebulae, Galaxies, and Star Clusters. Nebulae are my favorite type of deep-sky object to photograph due to their large size and varying color combinations ...
Nebulae, on the other hand, are interstellar clouds located within galaxies, including our Milky Way. They consist of hydrogen gas, plasma, helium, and other ionized gases. Nebulae are often associated with star formation, as their gravitational pull can lead to the collapse of gas and dust, ...
Why wouldn't the Internet (Hebrews 12:1) or galaxies of black holes (Psalm 19:1)? Folklore likes to imagine that angels are like single human individuals, but the ancients obviously related them to human collectives and their interactions instead (Daniel 10:13-21). When bad ideas occur to...