Transient
The nearest supernova seen since the invention of the telescope, and the first whose neutrinos were detected on Earth, three hours before the light arrived.
| Type | Transient |
|---|---|
| Event type | Supernova |
| Distance from Earth | 168,000 ly |
| Apparent magnitude | 2.9 |
| Redshift | 0.0009 |
| Discovered | 1987 |
The light reaching us from SN 1987A tonight left it around 168,000 years ago.
Of the 5 transients these pages cover, only 1 lie closer to us.
Its light arrives redshifted by z = 0.0009, stretched on the way here by the universe's expansion.
It has been on record since 1987.
Play today's Cosmodle