Tag: collide

Istanbul is an incredible city rich in story. Its strategic location between Europe and Asia has always been the subject of conflicts over the centuries. It is a city that evokes a wide range of emotions in those who have visited or| lived there. The city’s history, culture, and a...

My grandfather Liu Chengyu was a scholar revolutionary bent on overthrowing China’s Qing (aka Ch’ing) Dynasty in the early 1900s. He was also a poet and author. Alas, in keeping with the custom of humility in Chinese culture, he wrote little directly about himself. His anecdote...

If D1 is the time dilation factor (D1=1.5 means time is 1.5 times slower inside) in the galaxy cluster A, and D2 is the time dilation factor in the galaxy cluster B, then the time dilation factor at the intersection of these clusters would be D1×D2. When these clusters were intersecting (while...

Of all the galaxies in the Universe that lie beyond the Milky Way, none looms larger than our “big sister” in the Local Group: Andromeda. Andromeda has more stars, more mass, and a larger physical extent than the Milky Way in all three dimensions. It spans a larger angular extent in our ...

Of all the galaxies in the Universe that lie beyond the Milky Way, none looms larger than our “big sister” in the Local Group: Andromeda. Andromeda has more stars, more mass, and a larger physical extent than the Milky Way in all three dimensions. It spans a larger angular extent in our ...

Of all the galaxies in the Universe that lie beyond the Milky Way, none looms larger than our “big sister” in the Local Group: Andromeda. Andromeda has more stars, more mass, and a larger physical extent than the Milky Way in all three dimensions. It spans a larger angular extent in our ...