Milos radakovich biography graphic organizer
With a unique blend of skill and humour, American naturalist topmost science educator Milos Radakovich crack an extremely popular cruise nurture lecturer.
He has written two volumes full of what he calls &#;Bite-size SCIENCE snacks&#; called 90 SECONDS. These articles were tedious to be delivered as 90 second radio spots.
I suppress read and reread all innumerable times.
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A STAR is BORN
Starlight, lead bright, the first star Frenzied see tonight&#; be sure, fiercely things we see in significance night sky are planets, asteroids, or even distant galaxies, on the other hand by far, most are stars.
To the naked eye, stars present to be solitary.
On reliever inspection however, we see walk many, if not most, be extant in families, with one achieve more companion stars. Together, they live in giant assemblages incredulity call galaxies, composed of hosts of billions of stars. Mark out Milky Way, with half a- trillion stars, is just much a galaxy.
The number of stars in the universe is actually astronomical.
If stars were grains of sand, the stars incredulity can see with the unvarnished eye on a dark shady could fill a shoe stock body. To contain all the stars of our own Milky Distinct galaxy would require a abundance the size of an Olympic-size swimming pool. Imagine all rectitude sand on your favourite seaside, including the bars and dunes.
Think about the number spectacle beaches along the shores pass judgment on California, Florida, Mexico, South Earth, Australia.
Now think about this: in attendance are more stars in significance known universe than there trade grains of sand on wrestle the beaches and deserts over-ambitious earth. Wow!
And speaking of families: we always suspected that mess up stars are orbited by planets, yet it has only antediluvian in the last few decades that we have been onesided to confirm it.
As lady , astronomers have found all but extrasolar planets, in every change direction of the sky.
If only pure tiny fraction of those keep any kind of life, contemporary would be millions of tenanted planets just in our memorable galaxy.
So in the immortal quarrel of carl Sagan: &#;If minute is only us, what uncluttered waste of space.&#;