Hubble Space Telescope still pushing the frontiers of astronomy
To many astronomers ... miles away. That star, Alpha Centauri, is just 4 light years from Earth. The disk of the Milky Way spans 100,000 light years and millions to billions of light years separate galaxies. To extend the distance ladder across the ...
How to Find Your Way Around the Milky Way This Summer
Some of its members are brilliant like Vega, Deneb and Altair in the Summer Triangle, but most are so far away ... the galaxy’s plane, billions of stars pile up across thousands of light years to create a narrow band of light we call the Milky Way.
Colliding Galaxies Left a Stream of Gas 2.6 Million Light Years Long
Astronomers have discovered the mother of all gas streams, stretching a full 2.6 million light years across. Yes, that’s right: This stream is well over 20 times the diameter of our own galaxy, and so massive that it outweighs both the Milky Way and ...
Our Milky Way Galaxy Has Cosmic Halo 11.4 Billion Years Old
A new study has pinned down the age of the Milky Way's outer reaches with unprecedented precision, shedding light on how our galaxy and others across ... years, plus or minus 700 million, for the inner halo field. The results — which are much more ...
How Big Is Our Galaxy?
I mean, you may think it’s a long way ... galaxy, this one is about 100,000 light years in diameter. All of this, for a distant galaxy, we can learn just from a glance through a telescope across the Universe, some 30 million light years away. Indeed ...