Astronomers just predicted the replay of a star's violent death for the first time

SN Refsdal

https://en.wikipedia.org/wiki/SN_Refsdal

Compass and Scale Image for SN Refsdal and MACS J1149.6+2223

http://hubblesite.org/image/3497

Gravitational Lensing : 

http://hubblesite.org/images/gallery/18-gravitational-lensing

Galaxy Cluster MACS J1149.5+2223
http://hubblesite.org/image/3671/gallery/18-gravitational-lensing

It’s a first: Hubble scientists successfully predict supernova’s ‘instant replay’ - 동영상
December 16, 2015

https://www.geekwire.com/2015/nailed-it-hubble-space-telescope-proves-that-astronomers-can-predict-supernova-flash-in-advance/

Appearances of the Refsdal supernova

https://www.youtube.com/watch?v=UUMlYBeU4yE

ann15088 — Announcement 

MUSE Observations Enable Prediction of once-in-a-lifetime Supernova Replay

https://www.eso.org/public/announcements/ann15088/

Astronomers just predicted the replay of a star's violent death for the first time

Dec. 14, 2015

https://www.businessinsider.com/supernova-prediction-gravity-lens-hubble-2015-12

ASTRONOMERS CATCH GLIMPSE OF WHAT HAPPENS JUST BEFORE THE VIOLENT DEATH OF A STAR 9/7/18

https://www.newsweek.com/astronomers-catch-glimpse-what-happens-just-violent-death-star-1110957

Astronomers discover a star that would not die November 8, 2017

Supernova discovery challenges known theories of the death of stars

https://www.sciencedaily.com/releases/2017/11/171108131839.htm