These striking systems provide key snapshots for dissecting galactic disks and are studied extensively in the local Universe. However, not much is known about distant (z>0.1) collisional rings. Here we present a detailed study of a ring galaxy at a look-back time of 10.8 Gyr (z=2.19). ...
How much do you know about the universe? In the huge universe, there is the Galaxy and many other galaxies. In the Galaxy, there is the Solar System and lots of other stars. In the Solar System, there is the sun, the earth and seven other planets. As we know, the eight planets go...
In the 1980s, however, scientists realized that groups of galaxy clusters can also be connected by gravity, forming a supercluster, the largest class of objects in the universe. What is the Hercules-Corona Borealis Great Wall? Right now, scientists' best candidate for the biggest supercluster ...
How much do you know about the universe?In the huge universe,there is the Galaxy and many other galaxies.In the Galaxy,there is the Solar System and lots of other stars.In the Solar System,there is the sun,the earth and seven other planets.As we know,the eight planets go around their...
When astronomers look at thelargest stars(by volume) in the universe, they see a great many red supergiants. However, these behemoths are not necessarily—and almost never are—thelargest stars by mass. It turns out they're a late stage of a star's existence and they don't always fade...
Cannibal galaxy (Image credit: NASA/JPL-Caltech) As if zombie galaxies weren't spooky enough, some galaxies are giant cannibals. The Andromeda galaxy, Earth's largest neighbor, has been devouring smaller galaxies for at least 10 billion years, according to 2019 research. In another 4.5 billion...
GALAXIES (星系) OF THE UNIVERSEThe Milky Way is only one galaxy among a few hundred million galaxies in our universe (each with hundreds of billions of stars).Galaxies are huge groupings of stars,planets,gas and dust.Our sun is in the Milky Way,which measures about 100,000 light years ...
The Milky Way is only one galaxy among a few hundred million galaxies in our universe (each with hundreds of billions of stars). Galaxies are huge groupings of stars, planets, gas and dust. Our sun is in the Milky Way, which measures about 100,000 light years across. That long thin ...
与美国小学生一起学英文 Galaxy Can you believe that there are at least 100 billion galaxies in the universe? Yes, there are.Small galaxies have 10 billion stars and big galaxies have one trillion stars.The universe must be really big!Do you know what galaxies look like?Some galaxies have ...
GALAXIES(星系)OF THE UNIVERSEThe Milky Way is only one galaxy among a few hundred million galaxies in our universe (each with hundredsof billions of stars).Galaxies are huge groupings of stars, planets, gas and dust. Our sun is in the Milky Way, which measuresabout 100,000 light years ...