planets, stars, asteroids, comets, gas, dust and more. Our ownMilky Way, if considered as one object, is about 100,000light-yearsacross. Scientists struggle to characterize the largest galaxies, because they don't really have precise boundaries, but the largest galaxies we know of are million...
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 ...
in a 2012 paper in the journalSolar and Stellar Astrophysics. This red hypergiant star was once estimated to be 1,800 to 2,200 times the width of the sun, but new measurements brought it down to size. However, some sources still list it as the largest star. ...
While red supergiants are thelargest stars, each with a radius between 200 and 800 times the radius of our Sun, blue supergiants are decidedly smaller. Most are less than 25 solar radii. However, they have been found, in many cases, to be some of themost massivein the universe. (It'...
tookpartinwhatwasthelargestanimalrescueoperationever. Awarehousewasturnedintoarescuecenternearthehabitatandhundredsofpoolswerebuilt toholdabout100oiledbirdseach.Whenwalkingintothecenter,Icouldn?tbelievemyears.Ihad expectedtowalkintoachorusofhonkingandsquawking(尖声叫).Instead,thecentersounded likealibrary.Thepe...
The largest known 'object' in the Universe is the Hercules-Corona Borealis Great Wall. This is a 'galactic filament', a vast cluster of galaxies bound together by gravity, and it's estimated to be about 10 billion light-years across!
The largest galaxies can be seen in almost any telescope, under the right conditions. For example, my first successful photograph of theAndromeda Galaxywas captured using a compact refractor telescope with an 80mm aperture. However, viewing galaxies through the eyepiece of a telescope like this is...
What size is the sun compared to other stars? What constellation is Arcturus in? What are the largest stars called? What kind of star is Spica? What is between the Oort cloud and Alpha Centauri? What kind of star is Pollux? What is an astronomical unit used for?
When you want to watch the sky, size really matters. The more light a telescope can collect, the more information we can get about stars, galaxies, quasars, or whatever the heck else we want to take a look at.
What are irregular galaxies made of? The Milky Way is classified as what kind of galaxy? What is galactic astronomy? What three galaxies have the largest angular size? What does a white dwarf star look like? How many spiral galaxies are there? How big are irregular galaxies? What is a su...