One light-year is about 5.88 trillion miles (or 9.46 trillion kilometers). In astronomy, looking farther into the cosmos with telescopes automatically translates into observing the past because ...

The universe is too vast to track distances on the scale of miles, so astronomers use light-years to convey the great lengths ...

Maine The post How can the visible universe be 46 billion light-years in radius when the universe is only 13.8 billion years old? appeared first on Astronomy Magazine.

So a light year is just under 10 million million kilometres. This video discusses measurements in astronomy and explains why astronomers do not use standard forms like metres or kilometres to ...

Its distance is 1500 light years, meaning that the light we see ... One of the great scientific ideas of the 20th century astronomy was the discovery that there are other galaxies out there ...

"Beyond the Milky Way lie billions of other galaxies, drifting a few million light years from one another ... among the most productive in the history of astronomy, would supply both.

This gamma-ray burst has come from two billion light-years away, which means it occurred ... according to ESA to solve some of the biggest mysteries in astronomy—such as gamma rays.

The Royal Observatory Greenwich's 13th Astronomy Photographer of the Year ... lying some 900 to 1,500 light years away from Earth. The bright star Alnitak (just outside the field of view at ...