Astronomers find the longest radio jet ever from an old quasar.
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Scientists have found a huge stream of radio waves coming from a distant object called a quasar. This jet of radio waves is the biggest one ever seen from so far back in time.
Radio waves like these are common in our part of the universe but hard to see in the very early universe. This one is so big that we can see it even though it's very far away.
The stream of radio waves is twice as wide as our own Milky Way galaxy. It is estimated to be at least 200,000 light-years across, which is a very long distance.
The quasar that is producing these radio waves is very old and formed when the universe was very young. Quasars are very bright objects in space powered by black holes.
This particular quasar is very massive, containing the mass of 450 million suns. It has a black hole at its center, but it's not an unusually big one.
Questions
What is a quasar?
A quasar is a very bright object in space powered by a black hole.
How wide is the stream of radio waves?
The stream of radio waves is twice as wide as our own Milky Way galaxy.
How massive is the quasar mentioned?
The quasar contains the mass of 450 million suns.
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