Table of Contents
How old is GRB 090423?
630 million years
GRB 090423 occurred 630 million years after the Big Bang, when the Universe was only four percent of its current age of 13.7 billion years.
What is farthest known galaxy?
“From previous studies, the galaxy GN-z11 seems to be the farthest detectable galaxy from us, at 13.4 billion light-years, or 134 nonillion kilometers (that’s 134 followed by 30 zeros),” Kashikawa said in a statement.
When we look at an object that is 1000 light-years away do we see it?
It takes 1,000 years for light to travel 1,000 light-years, so we see the object as it was 1,000 years ago. Suppose we look at two distant galaxies: Galaxy 1 is twice as far away as Galaxy 2.
What is the farthest object from Earth?
List of most distant objects by type
| Type | Object | Redshift |
|---|---|---|
| Any astronomical object, no matter what type | GN-z11 | z = 11.09 |
| Galaxy or protogalaxy | ||
| Galaxy cluster | CL J1001+0220 | z≅2.506 |
| Galaxy supercluster | Coma Supercluster |
What is the oldest known object in the universe?
GRB 090423 was also the oldest known object in the Universe, apart from the methuselah star. As the light from the burst took approximately 13 billion years to reach Earth.
How far away is the gamma ray burst from Earth?
On April 23, 2009 the Swift satellite detected a gamma ray burst and as we reported back in April, scientists soon realized that it was more than 13 billion light-years from Earth. GRB 090423 occurred 630 million years after the Big Bang,…
How old was the universe when GRB 090423 emitted?
The universe was only 630 million years old when the light from GRB 090423 was emitted, and its detection confirms that massive stars were born and dying even very early on in the life of the universe.
What is the most distant object in the universe?
A stellar explosion has smashed the record for mostdistant object in the known universe. The gamma-ray burst came from about 13 billion light-yearsaway, and represents a relic from when the universe was just 630 million yearsold.