Bài nghe Kekenet VOA 18 7

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Scientists recently observed an (1)………………………. coming from an ancient galaxy.
The astronomers suspect the gamma ray burst they saw was the result of (2)
………………….. crashing into each other.
The stars are in an area dense with space objects near (3)……………………………. at the
center of their galaxy.
The researchers said that (4)…………………….. from the black hole may cause nearby
objects to move around a lot, increasing the chance of collision.
When very massive stars, those more than (5)…………………… the sun, die in explosions,
they can become neutron stars or even black holes.
Smaller stars like the sun leave behind what are called (6)………………...
Scientists used the data from (7)………………… to study the gamma-ray bursts, which took
place over 3 billion light years away.
Quiescent galaxies have (8)…………………………… in their center, where many collisions
take place.
Levan said: "You certainly wouldn't want a (9)………………………….. to one of these
events."