NASA @NASA
“Each burst is in some way unique.” @NASAFermi data is being used to catalog gamma-ray bursts, the universe’s most luminous explosions — caused by massive stars collapsing or neutron stars merging. Explore 5 record-setting events that made the list: https://t.co/dcdzhkp3uW https://t.co/1A0epCap1c — PolitiTweet.org