Caelum is a faint constellation in the southern sky, introduced in the
1750s by Nicolas Louis de Lacaille. Latin for "chisel", it is the
eighth-smallest constellation, measuring around 0.038 steradians, just
smaller than Corona Australis. Caelum is a rather barren constellation
with few objects of interest, due to its small size and location away
from the plane of the Milky Way. The constellation's brightest star,
Alpha Caeli, is only of magnitude 4.45, and only one other star (Gamma1
Caeli) is brighter than magnitude 5. Other notable objects in Caelum are
RR Caeli, a binary star with one planet approximately 20.13 parsecs
(65.7 ly) away; X Caeli, a Delta Scuti variable that forms an optical
double with Gamma1 Caeli; and HE0450-2958, a Seyfert galaxy (pictured)
that at first appeared as just a jet, with no host galaxy visible. The
source of the jet was once suggested to be a supermassive black hole,
but is now agreed to be a small galaxy that is partially obscured by
light from the jet and a nearby starburst galaxy.
Read more: <https://en.wikipedia.org/wiki/Caelum>
Today's selected anniversaries:
The first-ever appointments to the Order of the Garter, an
order of chivalry founded by King Edward III of England, were
Charles II, King of England, Ireland, and Scotland was crowned
at Westminster Abbey.
First World War: The British Royal Navy conducted a raid on the
Belgian port of Bruges-Zeebrugge
The Coca-Cola Company introduced "New Coke" to replace its
flagship soft drink Coca-Cola, which generated so much negative response
that the company put the previous formula back on the market less than
three months later.
Gamma-ray burst GRB 090423 was detected, coming from the most
distant known astronomical object of any kind at the time.
Wiktionary's word of the day:
(usually pejorative) One who loves or worships the works of William
Wikiquote quote of the day:
Science cannot solve the ultimate mystery of nature. And that is
because, in the last analysis, we ourselves are a part of the mystery
that we are trying to solve.