One of the most beautiful of the gobular clusters in my book.
There has to be a reason why this bad boy, globular cluster is
listed in the top 10 of Messiers catalogue. It is 75 light-years
across and 7,200 light-years from earth and even the smallest of
telescopes view it as a fuzzy ball of light. Located in the the
Scorpius constellation, it was discovered by Cheseauz in 1746 and
Messier catalogued it in1764. M4 contains at least 43 variable
M4 has another claim-to-fame, there is a planet with the memorable name
PSR B1620-26 B. It lives just on the outskirt of the M4s
core. Astronomers figure this guy is some 13 billion years old,
which is considerably older than our 4.65 billion years old
earth. PSR B1620-26 B is some 2.5 times the mass of Jupiter and
takes approx. 100 years for it to orbit around binary stars.
These are not just ‘regular’ stars, one is a white dwarf
– the other a millisecond pulsar. Talk about stranger than
fiction, makes Star Wars planet Tatween sp? Look pretty tame.