Sentences with phrase «as supernovae appear»

Not exact matches

Bizarrely, the supernovae appeared to be farther away from Earth than anybody had anticipated, implying that the cosmos was altogether bigger than astronomers had bargained for, as though gravity's pulling power was somehow being overwhelmed.

Given the redshift of the light from this stellar explosion — which occurred about 10 billion years ago, when the universe was one third its current size — the object appeared much brighter than it would have been if [dust filling intergalactic space simply made the supernovae appear dim, as some researchers had proposed].

The other method, practised by Riess and his colleagues, measures how distant galaxies appear to recede from us as the universe expands, using stars and supernovae of known brightness to gauge the distance to those galaxies.

But some astronomers wonder if distant supernovae appear dimmer than expected because supernovae in the past were not as bright as they are now.

What's more, during the supernova explosion, 99 percent of the precursor stars» gravitational binding energy goes into neutrinos of all flavors while barely half a percent appears as a visible light.

A newfound star in a nearby galaxy appears to have cheated death by blowing up at least twice as a supernova.

Types Ib and Ic are believed to correspond to stars ending their lives (as Type - II supernovae), but such stars would have lost their hydrogen before, and so hydrogen lines don't appear on their spectra (more discussion).