I was scheduled assist at Cline Observatory this past Friday,. Clouds kept us from opening the dome, but here’s a brief glimpse into what we had planned: Jupiter mag -1.3, 5.9 AU (51 Light Minutes) NGC 5897 (GC) mag 8.6, 12.1 kpc, receding at 10 km/s, arc of three 8th mag stars Alpha Librae … More Observing plan for Friday, August 11
What I Learned From Brian Greene This Summer I enjoy watching Brian Green on Colbert or sparring with Richard Dawkins. Several years ago I read his book “The Elegant Universe.” His way of presenting and explaining concepts was easy on the physics jargon and abundant in the joy. I got a paperback copy of Greene’s … More What I Learned From Brian Greene This Summer
Go to the pull-down-menu “Want to Show Support?” on my blog homepage, click that you “like” the page, click on one or more of the causes listed, then contribute. That will show how much you value the astronomy content I provide. I thank all of you for choosing to read some of my thoughts and … More What’s this “show support” all about?
I couldn’t convince my fellow Space Campers to join me to see the total lunar eclipse in 2007. After a day of intense training at the Huntsville center, I got my butt out of bed around 3:00 to observe the Moon move thru the umbra of the Earth’s shadow. My second day at Space Camp … More 2007 Lunar Eclipse at Space Camp
By 1984, Barbara and I were getting back into astronomy. She bought a small Celestron spotting scope and we began to get proficient at its operation. My interest in astrophotography was going to explode in a few years with the appearance of Comet Halley and an 8-inch Celestron, but at the time, observing was what … More Learning from the 1984 Annular Eclipse
In the 1950’s Fred Hoyle, along with W.A. Fowler, G. R. and E.M. Burbidge, realized that elements heavier than hydrogen and helium are made inside stars and in the explosion of very massive stars. Their exciting theory begins with hydrogen and a little helium collapsing into a star. A smaller star, like our … More Mnemonic Memory Device for Elements
Plans for Public Observing at Cline Observatory July 7, 2017 Bodies in our Solar System Saturn: Distance 9.1 AU or about 77 light minutes away 18” apparent diameter, 120,540 km rings only 10 m to 1 km thick. Quarter million miles across Titan Distance from Saturn: 1.2 million km (our Moon 380,000 km) 5149 km … More Observing Plans for Tonight
Of course the locations of planets in our sky changes over time. Same for the Sun and Moon. They all move among the background stars at different rates, passing in front of the constellations of the ecliptic. The Sun moves thru the thirteen ecliptic constellations in a year, The Moon moves thru them in a … More Where is the Sun? Where is Mars?
How about an easier way to remember the different regions of the electro-magnetic spectrum? Can you name them, in order of their energy? To remember the different colors of the rainbow, we have ROY G. BIV; red, orange, yellow, green, blue indigo and violet. To remember the planets we had “My Very Excited Mother Just … More Xena and the Electromagnetic Spectrum
We can watch the effects of the changing seasons by carefully observing the world map found on Periscope. The part of the Earth that is in sunlight dramatically changes through the seasons, and we can see that by way of this social media. Take a closer look at the map to the left. This is … More Equinox and Solstice on Periscope