Hundreds of millions of light years away, a supermassive black hole sits in the center of a galaxy cluster named Ophiuchus. Though black holes are renowned for sucking in surrounding material, they sometimes expel material in jets. This black hole is the site⦠[+5208 chars]Source
Now the positioning technology has been widely used. Many cars and mobile phones have positioning functions, and there are also many positioning apps. When your phone is lost, you can use such tools to quickly initiate location tracking requests. Understand how to locate the location of the phone, how to locate the phone after it is lost?