We shall see later that the density of this distribution can be calculated; it was about one proton and electron per litre. There is no hurry for anything to begin to happen. But at last small irregular tendencies accumulate, and evolution gets under way. The first stage is the formation ...
We estimate that the total baryonic mass contained in this medium is as large as ~ 1e12 solar masses, similar to the combined mass of the two most massive virialized constituents of the Local Group (the Andromeda and the Milky Way galaxies), and of the order of the mass required to ...
The Milky Way is a spiral(漩涡型的) galaxy, in which stars and gas clouds exist mainly in its spiral “arms”. Our massive neighbor, the Andromeda galaxy(仙女座), is also spiral. Spiral galaxies usually appear very flat and easy to see through a telescope, said the researchers. ...
It would take a spaceship 3 years to travel at the speed of light from one side to the other.For comparison reasons, the Milky Way Galaxy has a diameter of 100,000 Light Years. The Andromeda Galaxy is about 220,000 Light Years across. Alcyoneus, currently at the time of writing, is ...
Today's Astronomy Picture of the Day is Eric Hines' magnificent picture of the Milky Way (=centre of our galaxy) herehttp://travel.aol.co.uk/2011/06/30/photo-of-the-day-amazing-images-of-the-milky-way/. That picture was taken at the Devil's Tower in Wyoming (an ex core of a vo...
Explanation: A satellite galaxy of our Milky Way, the Small Magellanic Cloud is wonder of the southern sky, named for 16th century Portuguese circumnavigator Ferdinand Magellan. Some 200,000 light-years distant in the constellation Tucana, the small irregular galaxy's stars, gas, and dust that ...
Today's Astronomy Picture of the Day is Eric Hines' magnificent picture of the Milky Way (=centre of our galaxy) here http://travel.aol.co.uk/2011/06/30/photo-of-the-day-amazing-images-of-the-milky-way/. That picture was taken at the Devil's Tower in Wyoming (an ex core of a ...
Today's Astronomy Picture of the Day is Eric Hines' magnificent picture of the Milky Way (=centre of our galaxy) here http://travel.aol.co.uk/2011/06/30/photo-of-the-day-amazing-images-of-the-milky-way/. That picture was taken at the Devil's Tower in Wyoming (an ex core of a ...
Explanation: A satellite galaxy of our Milky Way, the Small Magellanic Cloud is wonder of the southern sky, named for 16th century Portuguese circumnavigator Ferdinand Magellan. Some 200,000 light-years distant in the constellation Tucana, the small irregular galaxy's stars, gas, and dust that ...
Explanation: A satellite galaxy of our Milky Way, the Small Magellanic Cloud is wonder of the southern sky, named for 16th century Portuguese circumnavigator Ferdinand Magellan. Some 200,000 light-years distant in the constellation Tucana, the small irregular galaxy's stars, gas, and dust that ...