Angela Grafitti first notice the Herbig class of stars and name them Her Big Stars. This got compacted to Herbig and then credited to George Herbig. That's what I heard anyway.
Hi Quasar,
Have a fine day!
I had a crush on George, actually, especially when she worked for Herbig, as in Her Big Brown eyes...
but then, I might watch too much television :}
Again, Quasar9, you've taught me something I'd have never known about the galaxy, and that is much appreciated my friend.
2.7 times the mass of the sun! Holy schnikes that's one big star!
lol Dr John, seems some artists still spay Angela's name on the walls. and the local councils have a full time job removing it.
Hi Casper,
And you too
lol Candoor,
Big eyes & fluttering eye lashes
can captivate a man with a flash
Hi Poetry Man,
so much to see & enjoy both down here and out there in the universe, but some have no time to enjoy - lost in how to control or gain control of 'it all'
Will try and compose or string together some words today for the Saturday Sonata at your place.
Peace!
what is the difference between time and space time??
Gorgeous pics, Q9 - will be back to read later!
First of all if one could find a cosmic string of pearls to wear around ones neck ... WOW!
The photograph is awesome.
Why would there be a stella explosion?
a simplified way ;o)
Hi Vishesh, I am thinking of doing a post (or two) on this, but here is about as brief as one can be
Time is when, Space is where
space-time is when & where.
Light cone
The interval AB in the diagram is 'time-like' (that is, there is a frame of reference in which event A and event B occur at the same location in space, separated only by their occurring at different times, and if A precedes B in that frame then A precedes B in all frames: there is no frame of reference in which event A and event B occur simultaneously). Thus, it is hypothetically possible for matter (or information) to travel from A to B, so there can be a causal relationship (with A the 'cause' and B the 'effect').
On the other hand, the interval AC in the diagram to the right is 'space-like' (that is, there is a frame of reference in which event A and event C occur simultaneously, separated only in space; (see simultaneity). However, there are also frames in which A precedes C (as shown) or in which C precedes A. Barring some way of travelling faster than light, it is not possible for any matter (or information) to travel from A to C or from C to A. Thus there is no causal connection between A and C.
Spacetime entails a new concept of distance. Whereas distances are always positive in Euclidean spaces, the distance between any two events in spacetime (called an "interval") may be real, zero, or even imaginary. The spacetime interval quantifies this new distance
Pairs of events in spacetime may be classified into 3 distinct types based on 'how far' apart they are:
time-like more than enough time passes for there to be a cause-effect relationship between the two events.
light-like the space between the two events is exactly balanced by the time between the two events.
space-like not enough time passes for there to be a cause-effect relationship between the two events.
Spacetimes are the arenas in which all physical events take place — for example, the motion of planets around the Sun may be described in a particular type of spacetime, or the motion of light around a rotating star may be described in another type of spacetime. The basic elements of spacetime are events. In any given spacetime, an event is a unique position at a unique time. Examples of events include the explosion of a star or the single beat of a drum.
The unification of space and time is exemplified by the common practice of expressing distance in units of time, by dividing the distance measurement by the speed of light.
Hi Annelisa,
will be over to yours in a mo to catch up on events and photo delights
Hi Trinity Star, There are several types of supernovae and at least two possible routes to their formation.
A massive star may cease to generate energy from the nuclear fusion of atoms in its core, and collapse under the force of its own gravity to form a neutron star or black hole.
Alternatively, a white dwarf star may accumulate material from a companion star (either through accretion or a collision) until it nears the limit of roughly 1.4 times the mass of the Sun (the Chandrasekhar limit), at which point it undergoes runaway nuclear fusion in its interior, completely disrupting the star.
This second type of supernova is distinct from a surface thermonuclear explosion on a white dwarf, which is called a nova.
Solitary stars with a mass below approximately 8 solar masses, such as the Sun itself, evolve into white dwarfs without ever becoming supernovae.
A supernova is a relatively rare event that occurs, on average, only once every 50 years in a galaxy the size of the Milky Way.
However, supernovas play a significant role in enriching the interstellar medium with heavy elements, and the expanding shock waves from these explosions can trigger the formation of new stars!
Thank you on that ... I am now reading up on some of the key words that I do not understand.
Even up there in the Universe ... the continuation death and birth goes on ... so extraordinary dont you think? where is her viewpoint she wonders.
Thanks again. :o)
Hi Trinity, without wishing to go too esoteric, physics seems to indicate that matter, energy and light are in a continuos state of change, being transformed from one phase to the next.
The terms death, birth (and rebirth) have connotations limited by the human mind and which severely inhibit perceptions of "life" or (physical) existence.
That is soooo beautiful Quasar! I appreciated the article as well as the explanations in the comments. Thank you!
Quasar, I get the picture. Thanks
Thanks for your wonderful comment at my post.
Have a wonderful weekend.
:o)
Hi quasar,
read this yesterday when you posted it, no questions, sort of absorbed it quietly.
http://www.youtube.com/watch?v=V...h?
v=V_vOfkQ7zAI
Hi Katie,
love the pics of Aztec, Alijax & Sackett
Thanks!
Hi Trinity, You are welcome!
Wishing you a Magical Weekend too
Hi Mystic Rose, Thanks!
I'd love a string of cosmic pearls...
lol!Annelisa
I shall endeavour to find you some.
I purchased those pearls for K.
Beautiful.
The dimensions are interesting to me with that ring being about a light year in diameter. Our solar system is something like a few light hours across, maybe 4 or so. The distances encountered in astronomy always amaze me.
Hi Pandabonium, Ah Well!
If you've already purchased those for k
I'll have to 'chase' some other ones for Annelisa, I hope she is patient it may take another 163,000 light years for another cosmic string of pearls to show on these shores - lol!
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