Transient
The brightest gamma-ray burst ever recorded, so bright it saturated every detector pointed at it and disturbed Earth's ionosphere from two billion light years away.
| Type | Transient |
|---|---|
| Event type | Gamma-Ray Burst |
| Distance from Earth | 1,900,000,000 ly |
| Apparent magnitude | 12 |
| Redshift | 0.151 |
| Discovered | 2022 |
The light reaching us from GRB 221009A tonight left it around 1,900,000,000 years ago.
Its light arrives redshifted by z = 0.151, stretched on the way here by the universe's expansion.
It has been on record since 2022.
Play today's Cosmodle