Wait a second, this doesn't sound right. According to your wikipedia link, the "Seven Sisters" constellation actually has 9 stars (named after the 7 sisters + parents). They are all visible with the naked eye.
> There are two puzzles surrounding the Pleiades, or Seven Sisters. First, why are the mythological stories surrounding them, typically involving seven young girls being chased by a man associated with the constellation Orion, so similar in vastly separated cultures, such as the Australian Aboriginal cultures and Greek mythology? Second, why do most cultures call them “Seven Sisters" even though most people with good eyesight see only six stars?
Most people see six bright stars, like those depicted in the Subaru logo. Yet, you are quite correct to point out that the overlapping stars in question, Atlas and Pleione, are named after the parents of the seven sisters in Greek mythology. Six-vs-Seven or Eight-vs-Nine are valid criticisms and raise the question of when the names of the stars were first used.
The narrative-based approach is imprecise but, like Historical Linguistics [2], it might be useful in identifying origins and connectedness. Regardless, knowing that the bright stars Atlas and Pleione were separated in the past is a useful fact for generating and testing hypotheses.
[1] https://www.dropbox.com/s/np0n4v72bdl37gr/sevensisters.pdf?d...
There are plenty of fields where we entertain "mysteries" that have perfectly rational explanations but settling the question once and for all with a rational argument would dry up the funding stream for accademicians and could have other undesirable consequences on some countries' political narrative.
And then it a sense of incredulity is showing, it's unimaginable, 100,000 kya is unimaginable, as if the world was fashioned in the mesolithic.
Who, if I remember correctly, are estimated to have settled about 50kya. There are later intrusions into the peninsula, as it were back then. Oceania was settled even later by boat. The language divide in Australia is overwhelmingly that of earlier indians (if you'll excuse the pun, the land bridge was connected to the Indian subcontinent), with other language families mostly limited to the north end
This I think might strengthen the argument significantly.
The Australians encountered multiple non-homo-sapiens species on their way to Australia and might have even picked up better vision from them. They do apparently have better temperature regulation suited to desert nights.
For example the remnant of Tycho Brahe's supernova is at about 8000 light-years from us [1].
A cluster on the other hand actually is a group of stars that formed from the same material and are thus very close to each other.
So there is a difference, but it's only a problem to interchange the terms the other way round.
A cluster could be treated as a constellation, but not vice versa.
For example, the Pleiades has a core radius of only about 8 light years, and almost all of the 1,000+ stars in the cluster are within a volume of radius 43 light years.
A constellation is a two-dimensional region of the sky, more like counties or states on a map. The "celestial sphere" is divided into 88 constellations, which were chosen essentially arbitrarily, based largely on historically significant apparent groupings of stars.
Stars in a constellation superficially look to us as though they're near each other, but they may be very different distances from us, because we see the night sky as two-dimensional.
For example, one of the furthest stars visible to the naked eye is over 16,000 light years away, called V762 Cas in the constellation Cassiopeia. Cassiopeia also contains many other stars that are much closer to us, such as Eta Cassiopeiae which is just 19.4 light years away, practically a next-door neighbor.