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Latest Activity: yesterday
Cosmology - Astrophysics - Astronomy
Hubble Wallpaper - Awesome Hubble Images
Started by Tom Sarbeck. Last reply by Tom Sarbeck Oct 11, 2016.
Started by Mrs.B. Last reply by Mrs.B Apr 9, 2016.
Started by Davy. Last reply by Onyango Makagutu Mar 8, 2016.
Started by Davy Oct 3, 2013.
Started by Davy. Last reply by Davy Aug 15, 2013.
How quickly are the Pillars of Creation being destroyed? (Synopsis)
Comments of the Week #166: from expanding faster than light to periodic mass extinctions
Ask Ethan: Can Failed Stars Eventually Succeed? (Synopsis)
Are Mass Extinctions Periodic, And Are We Due For One? (Synopsis)
LIGO’s Successor Approved; Will Discover Incredible New Sources Of Gravitational Waves (Synopsis)
CHRISTMAS LECTURES 1977: Carl Sagan - The Earth as a Planet from the Royal Institute.
How quaint the technology was in 1977 and how much we have learnt since then.
For those without a telscope the software Starry Night helps define the constallations.
It's terrible that people enjoy city lights on hilltops more than stars.
I'm told that some places in the Southern U.S.A. camping can be dangerous because of wild boars
Trial of Galileo (1633)
"My dear Kepler, what would you say of the learned here, who, replete with the pertinacity of the asp, have steadfastly refused to cast a glance through the telescope? What shall we make of this? Shall we laugh, or shall we cry?"--Letter from Galileo Galilei to Johannes Kepler
In the 1633 trial of Galileo Galilei, two worlds come into cosmic conflict. Galileo's world of science and humanism collides with the world of Scholasticism and absolutism that held power in the Catholic Church. The result is a tragedy that marks both the end of Galileo's liberty and the end of the Italian Renaissance.
Galileo Galilei was born in 1564--the same year that Shakespeare was born and Michelangelo died. From an early age, Galileo showed his scientific skills. At age nineteen, he discovered the isochronism of the pendulum. By age twenty-two, he had invented the hydrostatic balance. By age twenty-five, Galileo assumed his first lectureship, at the University of Pisa. Within a few more years, Galileo earned a reputation throughout Europe as a scientist and superb lecturer. Eventually, he would be recognized as the father of experimental physics. Galileo's motto might have been "follow knowledge wherever it leads us...."
Just two months from now, the moon will completely block the sun’s face, treating part of the US to a total solar eclipse.
On the same token many may have never seen bioluminescence.
I'm thinking of getting a black light to flouresce my ceiling which is painted "ceiling white." The walls are a muted clay color.
A Solar Eclipse will cross the U.S. August 21, 2017. I'm thinking of visiting a friend in Oregon to view it. Hopefully it won't be too cloudy.
It's a once in a lifetime oppertunity.
Light pollution is a problem for viewing the 'heavens.' I have a small telescope that allowed me to view some of the moons of Jupiter.
I find it sad that most people enjoy and are only able to see city lights vs. the stars and beauty of the milky way. I wonder how many people have never been able to see the milky way.
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use
It’s that beautiful time of year again in the Northern Hemisphere, when the June solstice – your signal to celebrate summer – is nearly upon us.
The sunset has been making its way north, as illustrated in this 2016 photo composite by Abhijit Juvekar.
The June solstice – your signal to celebrate summer in the Northern Hemisphere and winter in the Southern Hemisphere – happens on June 21, 2017 at 4:24 UTC. That’s 11:24 p.m. CDT in North America on June 20. Translate to your time zone. For us in the Northern Hemisphere, this solstice marks the longest day of the year. Early dawns. Long days. Late sunsets. Short nights. The sun at its height each day, as it crosses the sky. Meanwhile, south of the equator, winter begins.
Read more= http://earthsky.org/earth/everything-you-need-to-know-june-solstice
Really hard to see.
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