Earthrise from the moon from Apollo 8 by Wm. Anders

“We go about our daily lives understanding almost nothing of the world. We give little thought to the machinery that generates the sunlight that makes life possible, to the gravity that glues us to an Earth that would otherwise send us spinning off into space, or to the atoms of which we are made and on whose stability we fundamentally depend. Except for children (who don’t know enough not to ask the important questions), few of us spend much time wondering why nature is the way it is; where the cosmos came from, or whether it was always here; if time will one day flow backward and effects precede causes; or whether there are ultimate limits to what humans can know.”–Carl Sagan
From “A Brief History of Time” by Stephen Hawking

Sun and Moon Data – part of the Astronomical Applications from the US Naval Observatory – Find out when and where the sun will rise or set from anywhere.

A.P.O.D. Astronomy Picture of the Day.
NASA Top 10 Images You can vote for your favorite.
Cassini Photos from Boston Globe’s Big Picture
Remembering Apollo 11 forty years later – from Boston Globe’s Big Picture
The longest solar eclipse of the century – from Boston Globe’s Big Picture

Arxiv – Cornell University Library e-prints in Physics, Mathematics, Computer Science and Quantitative Biology.

“I know nothing with any certainty, but the sight of stars makes me dream.” – Vincent van Gogh


See what satellites are zipping overhead.

See where the Shuttle and Space Station are right now.

See when one of these objects will be in your visual range.

This last link will require a quick and painless registration, after which you will need set your global location (lat. & long. or US Zip Code). Once that is done, simply look for the sections on Satellites, and click on ISS if you want to see the Space Station.

IMAGINE THAT: Every sixty minutes, the universe expands by one billion miles in all directions.

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