What are galaxies?The Galaxies of the Local Group by Sidney van den Bergh, Cambridge Astrophysics Series; The Formation of Galactic Bulges eds C M Corollo, H C Ferguson and R F G Wyse, Cambridge Contemporary Astrophysics.BinneyJamesEBSCO_AspAstronomy & Geophysics...
What are dwarf galaxies?Question:What are dwarf galaxies?Large Magellanic Cloud:The Large Magellanic Cloud is a galaxy with a single spiral arm that orbits the Milky Way. With an estimated 30 billion stars, it is sometimes classified as a dwarf galaxy and sometimes as a regular galaxy.Answer...
All of the billions of galaxies in our universe can be broken down into three main categories of galaxies. First there are the spiral galaxies, like our Milky Way, that have spiral arms jutting out from a central bulge. Then there are the elliptical galaxies that have a uniform ellipsoid ...
These galaxies could be created by the merger of two smaller galaxies. Radio emissions could also be connected to the rotation of the central black hole, which may facilitate the formation of powerful jets. Radio Galaxy FAQs What are examples of radio galaxies? Famous examples of radio galaxies...
The majority of bright early-type galaxies in this field are found at redshifts $z \\leq 1.3$ to share common properties with those of high-z cluster samples, as for the age and mass of the dominant stellar population -- which are found to be as old as 3-5 Gyr and as massive as...
There are three main types of star clusters: globular clusters, open clusters, and stellar associations, each of which has different properties that provide different information to astronomers. Globular star clusters Globular star cluster NGC 6717 is located about 20,000 light-years from Earth, acco...
The largest known Galaxy is IC 1101, discovered by Sir William Herschel There are four main types of galaxies (Spiral, Lenticular, Elliptical, Irregular) Galaxy's centre? No one knows for sure. Some say it is a super-star, a collection of bright stars or a super-black hole. The centre...
The stars and constellations visible in the earlier part of the night are those of spring, but there’s a transition taking place in the early hours as the stars of summer begin to take over. The kite-shaped constellation of Boötes, the Herdsman rides high across the May sky, with the...
There are three main reasons: size, spin and composition or age. Dark comets are often small, just a few metres to a few hundred metres wide. This leaves less surface area for material to escape and form into the beautiful tails we...
The Goldilocks Zone is a region of space around a star where conditions are neither too hot nor too cold for life to exist. It comes from the fairy tale 'Goldilocks and the Three Bears', where the little girl tastes the Bear's porridge and finds one too hot and another too cold, but...