The first half of the twentieth century saw tremendous advances in the tools of the professional astronomers; telescoper, photographic film and spectroscopic detectors. This allowed our knowledge of the size and composition of the universe to grow in leaps and bounds....
The Dragonfish is likely the largest such nebula in the Milky Way, making it easily visible even from other galaxies, yet it’s entirely invisible to our optical telescopes 龙鱼星云可能是银河系中最大的此类星云,即使从其他星系也能轻易观测到,但在光学显微镜下却完全不可见。 Still, we can do even...
Like other galaxies, the Milky Way is an isolated collection of stars and other material bound together by their common gravity. In addition to the 100 billion to 400 billion stars in our galaxy, asimilar number of planetslikely exist in the Milky Way — some of them part of solar systems...
Leo IV is one of more than a dozen ultra-faint dwarf galaxies near the Milky Way. These galaxies are dominated by dark matter, an invisible substance that makes up most of the universe's mass. january-2-2019-galaxy-cluster-sdss-j1004-4112 1月2日Galaxy Cluster SDSS J1004+4112 This pic...
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 ...
The Milky Way and Andromeda are two giant spiral galaxies in our local Universe, and light takes a cosmologically tiny two million years to get between them. With Andromeda no longer considered the Milky Way’s big brother, new simulations are needed to find out what will happen when the t...
Our star, 'The Sun', is one of many billions of other stars that make up the Milky Way Galaxy. Our Milky Way is one of many billions of galaxies that make up the physical part of the Universe. Galaxies also contain comets, asteroids, nebulas, planets etc Most galaxies are moving aw...
Surrounding the galaxy for thousand and thousand of light years is space.At great distances,however,billions of other galaxies are scattered.These galaxies are of many shapes and sizes.The Milky Way Galaxy is shaped like a spiral(螺旋型)disk.Other galaxies have been found to be shaped like ...
Planetary nebulae are gas and dust shells ejected by stars near the end of their lives - typically seen around stars comparable or smaller in size than the Sun.The existing population of planetary nebulae is found around small stars comparable in size to our Sun but a new population discovered...
'Dark matter is more valuable than gold': Wobbly galaxies help shine a light on the universe's strangest stuff Mysterious phenomenon at the heart of the Milky Way could point to new dark matter suspect. 'We may have been overlooking its subtle chemical effects on the cosmos.' ...