Sentences with phrase «exploded as supernovas billions»
These are black holes that are a few to a few dozen times the mass of our sun that were likely formed by the death of very massive stars after they'd run out of fuel and exploded as supernovas billions of years ago.
https://science.howstuffworks.com/ Not exact matches
Riess has since hunted down supernovae that exploded more than 7 billion years ago, filling in gaps: The universe first slowed down as the inward pull of matter dominated over the relatively mild outward push of dark energy.
Four images of the same supernova flashed in the constellation Leo as its light bent around a galaxy sitting about 6 billion light - years away between Hubble and the exploding star, researchers report in the March 6 Science.
This space observatory will be able to study supernovas that exploded as far back as 10 billion years to analyze the shifting relationship between the pull of mass and the push of dark energy.