James Webb captures second supernova from distant lensed Galaxy


Valued Senior Member
The image is not particularly impressive HST captured the same lensed Galaxy in 2016, what is exciting is this is the second supernova from the same Galaxy.

The light from the supernova has been bent around the galaxy cluster in front of it, an effect known as lensing first predicted by Einstein.

Some of the light has already reached Webb's giant mirrors but the remaining light will not arrive for another 11 years or so.

These data will be used to calculate the Hubble constant more accurately, which currently is at odds with prediction and most recent data.


From the article,

"Supernovae are normally unpredictable, but in this case, we know when and where to look.... Infrared observations around 2035 will catch their last hurrah and deliver a new and precise measurement of the Hubble constant."