Sentences with phrase «since big black holes»

Since big black holes tend to reside at the cores of big galaxies, the huge masses of these two compact galaxies» black holes — about 4 to 6 million times as massive as our sun — are the strongest indication that the dwarf galaxies are not traditional dwarfs and the black holes are not overweight.

Not exact matches

As we noted, the LHC will not destroy the world and as George Musser wrote to me after we recorded the interview, «I said something to the effect that scientists had stocked [stoked] concerns about black holes by saying the LHC would create particles not seen since the big bang, but those particles have been seen since the big bang, namely in natural processes such as cosmic ray collisions; therefore if black holes posed a threat, the universe would already be a goner.»

Musser: I think the scientific community and science journalist [s] bear a little bit of [the] responsibility for that perception among the public because we always talk about the LHC as recreating conditions not seen since the big bang, and you would therefore think if there hasn't been an energy level like that seen since the big bang, then all the phenomenon of the big bang might be unleashed upon us; these black holes, possibly being one, because people do talk about black holes having been created in the early universe.

Given the 13.8 billion years that have passed since the Big Bang, it may be enough time for supermassive black holes to grow to their gigantic sizes, but how then do we explain that some of them formed less than 800 million years after the universe came into existence?